Kazuhiro (Kazz) Kondo


Yamagata University,                                       Telephone: +81-238-26-3312

Faculty of Engineering,                                      e-mail: kkondo@yz.yamagata-u.ac.jp

Dept. of Electrical Engineering

 

Background

Japanese citizen with extensive residency in New York, NY (5 years) and Dallas, TX (4 years).

 

Education

Doctor of Engineering (Ph. D.), Waseda University                                                            1998

Major: Electrical Engineering

Dissertation: A Study on Speech Coding for Asynchronous Transfer Mode Networks, and Speech Recognition for the World Wide Web

Master of Engineering, Waseda University                                                                         1984

Major: Electrical Engineering

Thesis: An Analysis of the Vision System Functions by Intense Light Stimuli

Bachelor of Engineering, Waseda University                                                                      1982

Major: Electrical Engineering

Thesis: Non-invasive Visual Instrumentation of the Digestive System

 

Professional Experience

Faculty of Engineering, Yamagata University                1999 - Present

Associate Professor                                                                  1999 - 2015
Professor                                                                                  2015 - Present 

Responsible for research and education in the field of signal processing for communication. Specific interest fields include, but not limited to multimedia signal processing with emphasis on speech and video processing, 3D audio and its applications, active sound control, audio data hiding, speech intelligibility measurement and its objective estimations, and parametric speakers.

 

Conversational Computing Corporation                            1999

Developer

Responsible for the development of robust speech recognition front-ends for noisy environment. Also responsible for developing Japanese speech recognition models for PC applications.

 

Texas Instruments, Dallas, TX                                              1995 - 1998

Member of Technical Staff

Responsible for the development of high performance phonetic models in both English and Japanese, in both telephone and microphone channels. Also responsible for improving Japanese digit models and for developing applications using the Japanese models.
Developed phonetic models in both English and Japanese which reduced word errors to less than half with improved context cluster tree and Gaussian mixtures. Models used for successful multi-language speech recognition demos at a major telecommunication equipment exposition (Telecom 95).
Proposed and evaluated a system, which enables control of Japanese World Wide Web pages using speech recognition. Developed prototype using C and Perl on a UNIX platform.

 

Texas Instruments Tsukuba Research Center, Tsukuba, Ibaraki, Japan 1992 - 1995

Researcher

Responsible for the development of Japanese speech models for both telephone and microphone channels. These included word-based digit models as well as phonetic models. Also, participated in the establishment of the speech research program in the new Tsukuba R & D center.
Proposed and prototyped a flexible vocabulary Japanese speech recognition system which enabled arbitrary words to be added to the vocabulary on the fly.
Proposed and evaluated an efficient inter-word phonetic context modeling method which reduced the number of required phonetic models to less than one half with no performance penalty.

 

Hitachi, Kokubunji, Tokyo, Japan                                                         1984 - 1992

Researcher

Responsible for the development of speech signal processing systems for the telecommunication market. Also responsible for video coding systems for the professional digital VCR market.
Proposed and evaluated a speech packet coding/transmission system which showed only modest degradation even at 30 % packet loss. Real-time prototype developed using multiple DSPs, and transferred for productization.
Designed and implemented a speech coder prototype which decreased the bit rate from 64 to 8 kbits/sec maintaining toll-quality speech quality with a single DSP, while meeting target delivery schedule to productization.
Proposed and evaluated a video coding method for digital VCRs which enabled trick-play (jog, shuttle).

 

Academic Experience

Faculty of Engineering, Yamagata University                Apr. 1999 - Present

Associate Professor                Apr. 1999 - Mar. 2015

Professor                              Apr. 2015 - Present

Courses

    Information Communication (First semester, 1999-2001)
Electronic Circuits (Second semester, 1999, 2001)

Fundamentals of Electrical Engineering (First semester, 2000-2001)
Computer Programming 2 (Second semester, 2001-2003)
Logic Circuits (Second semester, 2001-2004)
System Analysis B(First semester, 2002-2007)
System Analysis A(First semester, 2004-2007, 2014 -2016 )
Information Processing (First semester, 2004-2005) English for Electrical Engineers 2 (Second semester, 2002-2007)
Introduction to Computer Systems (First semester, 2006-2013)
Communication Systems (Second semester, 2006-2018)
Computer Programming 1 (First semester, 2008-)
Signal Processing (Second semester, 2007-2009)
Digital Circuits (Second semester, 2014 - 2016)
Mathematics 4 (Fourier Analysis) (Second semester, 2018-)
Digital Communication (Graduate first semester, 2000-)
Media Signal Processing (Graduate, 2007-)

Areas of Research and Educational Interests

    Multimedia Signal Processing
Speech and Audio Processing
Visual Signal Processing
Active Sound Control
Data Hiding for Audio
Speech Quality Assessment
Super-Directive Speakers incl. Parametric Speakers

University Services

    University Traffic Safety Committee (1999.4 - 2000.3 )
Department Treasurer (2000.4 - 2001.3)
Student Welfare Committee (2001.4-2003.3)
Curriculum Committee (2002.4-2003.3)
Library Committee (2003.4-2004.3)
Education Program Committee (2003.4-2005.3)

Entrance Exams Committee (2008.3-2009.3), Associate Chair (2017.4-2018.3), Chair (2018.4-2019.3) 
Informatics and Electronics Department Chair (2020.4-2021.9)

 

Professional Associations

         The IEEE Signal Processing Society, Senior Member
            The Institute of Electrical, Information and Communication Engineers of Japan, Senior Member
            The Acoustical Society of Japan
            The Audio Engineering Society

Professional Activities

Served as reviewer for the IEEE Communication Society, the IEEE Signal Processing Society, the IEEE Broadcast Technology Society, IEEE Consumer Electronics Society, Audio Engineering Society, SPIE, Elsevier Applied Acoustics, Elsevier Speech Communication, Springer IJIS, Acoustical Society of America, Noise Control Engineering Journal, the Institute of Electronics, Information and Communication Engineers of Japan (IEICE), the Information Processing Society of Japan (IPSJ), and the Acoustical Society of Japan (ASJ), Sensors, and others..

Session chair, IEEE ICASSP, IEEE ISSPIT, IEEE IIHMSP, I-INCE Internoise, ASJ National Conventions, IEICE/ASJ Technical Meetings, Tohoku-section Joint Convention of Institutes of Electrical Engineering.

IEEE Sendai Chapter Executive Committee Member

IEEE Signal Processing Society Sendai Chapter Vice Chair, Chair

IEICE Delegate

IEICE Tohoku Chapter board member

IEICE Technical Group member, Multimedia Information Hiding (MIH)

IEICE Technical Group member, Enriched Multimedia (EMM)

IEICE Technical Group member, Information Hiding and its Criteria for Evaluation (IHC)

IEICE/ASJ Joint Technical Group member, Engineering Acoustics (EA)

ASJ Tohoku Chapter Secretary of Finance, Secretary of General Affairs, Accounting Auditor, Board of Governers, Chair

ASJ Journal Review Board Member

Program Committee Member, IEEE International Conference on Intelligent Information Hiding and Multimedia Signal Processing 2008 - 2014

Invited Session Organizer, IEEE International Conference on Intelligent Information Hiding and Multimedia Signal Processing 2011 - 2014

Program Chair, International Conference on Intelligent Information Hiding and Multimedia Signal Processing 2018

Conference co-chair, International Conference on Intelligent Information Hiding and Multimedia Signal Processing 2022

Co-guest Editor, Journal of Information Hiding and Multimedia Signal Processing, Special Issue on the enrichment of sound, speech and music media 2016-2019

Technical Program Committee Member, IEEE Global Conference on Consumer Electronics 2018, 2019, 2020, 2021, 2022, 2023, 2024

Technical Program Committee Member, IEEE International Conference on Consumer Electronics 2024

Program Chair, International Conference on Intelligent Information Hiding and Multimedia Signal Processing 2018

 

Publications

Journals and Book Chapters (refereed)

  1. Kazuhiro Kondo, Noriyuki Hayasaka, "A speech jammer using ultrasonics for speech privacy protection and smart speaker attack prevention," Noise Control Engineering Journal, Vol.72, No.3, pp. 190-200, DOI: 10.3397/377218, May 2024.

  2. Kazushi Nakazawa, Kazuhiro Kondo, "On Improvement to Non-Reference Speech Intelligibility Estimation Accuracy for Reverberant Speech," IEEJ Transactions on Electronics, Information and Systems, Vol.143, No.8, pp.830–841, DOI: 10.1541/ieejeiss.143.830, Aug. 2023.

  3. Kohta Muroi, Kazuhiro Kondo, "Speech Manipulation Detection Method using Audio Watermarking," J. Inf. Hiding and Multimedia Sig. Process., vol., 13, no. 2, pp. 145-154, June, 2022.

  4. Kaito Echizenya, Kazuhiro Kondo, "Indoor Position and Movement Direction Estimation System Using DNN on BLE Beacon RSSI Fingerprints," Advances in Science, Technology and Engineering Systems Journal, vol., 7, no. 3, pp. 129-138, June, 2022.

  5. Yosuke Kobayashi, Kazuhiro Kondo, "Japanese speech intelligibility estimation and prediction using objective intelligibility indices under noisy and reverberant conditions," Applied Acoustics vol. 156, pp. 327-335, Dec. 2019.

  6. Kazuhiro Kondo, "Evaluation of Information Hiding Technology for Audio," in "Information Hiding Technology for Audio," Acoustical Society of Japan (Ed.), ISBN 978-4-339-01135-7, Corona Publishing, March, 2018.

  7. Kazuhiro Kondo, Kazuya Taira, "Estimation of binaural speech intelligibility using machine learning," Applied Acoustics vol. 129, pp. 408-416, January 2018.

  8. Yosuke Kobayashi, Kazuhiro Kondo, "A Case Study of Bootstrap Masker Quality Assessment for Speech-Privacy Protection," Journal of Information Hiding and Multimedia Signal Processing, vol. 8, no. 6, pp. 1460-1469, Nov., 2017. open access

  9. Kazuhiro Kondo, Joji Yamada, "A Frame Synchronization Method for Audio Watermarks Robust Against Analog Aerial Transmission," Journal of Information Hiding and Multimedia Signal Processing, vol. 8, no. 5, pp. 1043-1053, Sept., 2017. open access

  10. Kazuhiro Kondo, "Audio watermark," in Acoustic Keword Book, the Acoustical Society of Japan (Ed.), ISBN978-4-339-00880-7, pp. 56-57, Corona Publishing, March, 2016.

  11. Kazuhiro Kondo, "Estimation of forced-selection word intelligibility by comparing objective distances between candidates," Elsevier Applied Acoustics, vol. 106, pp. 113-121, May, 2016.

  12. Toshihiro Sakano, Yosuke Kobayashi, Kazuhiro Kondo, "A speech estimation method using a non-reference feature set," IEICE Trans. Inf. & Syst., Vol. 98-D, No. 1, pp. 21-28, Jan. 2015.

  13. Kazuhiro Kondo, "On Audio Quality Evaluation Methods Applicable to Watermarked Audio Signals," Trans. Acoust. Soc. Japan, Vol. 71, No. 1, pp. 44-50, Jan. 2015. Invited paper.

  14. Kazuhiro Kondo, Hiroki Sakurai, Shintaro Kashiwada, Tomohiro Komiyama, "Speaker and Gender-Dependent Maskers for Efficient Speech Privacy Protection," Noise Control Eng. J., Vol. 62, No. 6, pp. 411-421, Nov./Dec. 2014.

  15. Kazuhiro Kondo, Yoshimi Yamaguchi, Toshio Koba, "Feasibility Study of a Parallel Audio and Video ECC for Watermarks in Short Audio and Video Frames," Multimedia Technology, Vol. 3, pp. 23-28, 2014.

  16. Kazuhiro Kondo, Naoya Anazawa, Yosuke Kobayashi, "Comparison of Output Devices for Augmented Audio Reality," IEICE Trans. Inf. & Syst., Vol. 97-D, No. 8, pp. 2114-2123, Aug. 2014.

  17. Masanori Miura, Hideto Watanabe, Koh Kawai and Kazuhiro Kondo, " A Comparison of the Noise Controlled Earphone and the Bone Conduction Headphone in Outdoor Audio Augmented Reality for Pedestrians and Cyclists (An Examination of the Intelligibility of the Annotation Sound in Wind Noise Environment), Trans. Japanese Soc. of Mech. Eng., vol. 79, no. 805, pp. 2992-3001, Sept. 2013.

  18. Yosuke Kobayashi and Kazuhiro Kondo, "Speech intelligibility estimation using support vector regression and critical band segmental SNR in noisy condition," IEEJ Trans. Electronics, Information and Systems, vol. 133, no. 8, sec. C, pp. 1556-1564, Aug. 2013.

  19. Yosuke Kobayashi and Kazuhiro Kondo, "Performance Evaluation of an Ambient Noise Clustering Method for Objective Speech Intelligibility Estimate," IEEJ Trans. Electronics, Information and Systems, vol. 133, no. 2, sec. C, pp. 380-387, Feb. 2013. IEEJ Tohoku Chapter Chair Award

  20. Kazuhiro Kondo (Ed.), Multimedia Information Hiding Technologies and Methodologies for Controlling Data, ISBN 9781466622173 (IGI-Global, 2012).
    1-1)  Kazuhiro Kondo, “Data Hiding for Stereo Audio Signals,” in Multimedia Information Hiding Technologies and Methodologies for Controlling Data, K. Kondo (Ed.), ISBN 9781466622173 (IGI-Global, 2012).
    1-2)  A. Nishimura, K. Kondo, “Information Hiding for Audio Signals,” in Multimedia Information Hiding Technologies and Methodologies for Controlling Data, K. Kondo (Ed.), ISBN 9781466622173 (IGI-Global, 2012).

  21. Toru Shibuya, Hitomi Watanabe, Yosuke Kobayashi, Kazuhiro Kondo, "Differences in the Effect of Time-Expanded and Time-Contracted Speech on Intelligibility by Phonetic Feature and Adaptive Rate Control Strategy," The Journal of the Institute of Image Information and Television Engineers, vol. 66, no. 10, (Oct. 2012).

  22. Kazuhiro Kondo, Tomohiro Terada, Futari Kano, “Speech intelligibility of guide audio with parametric loud speakers,” Noise Control Engineering Journal, vol. 60, no. 5 (Sept./Oct. 2012).

  23. Kazuhiro Kondo, “Estimation of Speech Intelligibility Using Objective Measures,” Applied Acoustics, Elsevier, vol. 74, issue 1, pp. 63-70 (Jan. 2013)(online pub. July, 2012).

  24. Kazuhiro Kondo, Yusuke Takano, Rui Kaga, Masaya Fujimori, “A Two-to-One Selection Based Japanese Speech Intelligibility Test and its Objective Estimation Methods,” in Advances in Communication And Media Research, A. V. Stavros (Ed.), ISBN 978-1-60876-576-8, Nova Science Publishers, June, 2012.

  25. Kazuhiro Kondo, Subjective Quality Measurement of Speech - Its Evaluation, Estimation, and Applications, ISBN 978-3-642-27505-0, Springer-Verlag, March, 2012.

  26. Kazuhiro Kondo, A Data Hiding Method for Stereo Audio Signals Using Inter-Channel Decorrelator Polarity, Journal of the Audio Engineering Society vol. 59, no. 6pp. 379-395, June 2011.

  27. Kazuhiro Kondo, "Estimation of Speech Intelligibility Using Perceptual Speech Quality Scores," in Speech and Language Technologies, Ivo Ipsic (Ed.), ISBN 978-953-307-322-4, InTech, June, 2011. (Open Access Book)

  28. Yusuke Takano and Kazuhiro Kondo, "Estimation of Speech Intelligibility Using Speech Recognition Systems," IEICE Trans. Inf. and Syst., vol. E93-D, no. 12, pp. 3368-3376, Dec. 2010.

  29. Keiichi Satoh, Jubee Tada, Yasutaka Tamura, Gensuke Goto, Toshio Koga and Kazuhiro Kondo, "Three-Dimensional Ultrasound Imaging Using Hardware Acceralator Based on FPGA", in Vision Sensors and Edge Detection, Francisco Gallegos-Funes (Ed.), ISBN: 978-953-307-098-8, Sciyo, Aug. 2010. PDF available.

  30. Yosuke Kobayashi, Kazuhiro Kondo, and Kiyoshi Nakagawa, “Intelligibility of HE-AAC Coded Japanese Words with Various Stereo Coding Modes in Virtual 3D Audio Space,” in Auditory Display, Lecture Notes in Computer Science, 5954, Springer-Verlag, Berlin/Heidelberg, pp. 219-238, May, 2010.

  31. Kazuhiro Kondo Takahito Chiba, Yuichiro Kitashima and Noriyasu Yano, "Intelligibility Comparison of Japanese Speech with Competing Noise Spatialized in Real and Virtual Acoustic Environments," Acoust. Sci. & Tech., vol. 31, no. 3, pp.231-238, 2010. PDF available.

  32. Kazuhiro Kondo and Kiyoshi Nakagawa, "A Digital Watermark for Stereo Audio Signals Using Variable Inter-Channel Delay in High-Frequency Bands and its Evaluation," International Journal of Innovative Computing, Information and Control, vol. 6, no. 3(B), pp. 1209-1220, Mar. 2010.PDF available.

  33. Kazuhiro Kondo and Kiyoshi Nakagawa, " Simple watermark for stereo audio signals with modulated high-frequency band delay, " Acoustical Science and Technology", vol. 29, no. 6, pp. 384-387, Nov. 2008. PDF available.

  34. Yuichiro Kitashima, Kazuhiro Kondo, Hirotoshi Terada, Takahito Chiba and Kiyoshi Nakagawa, “Intelligibility of read Japanese words with competing noise in virtual acoustic space,” Acoust. Sci. & Tech., vol. 29, no. 1, pp.74-81 (Jan. 2008).

  35. K. Kondo and K. Nakagawa, Speech emission control using active cancellation, Speech Communication, vol. 49, no. 9, pp. 687-696, Sept. 2007.PDF available.

  36. K. Kondo, R. Izumi, M. Fujimori, R. Kaga, K. Nakagawa, Two-to-one selection-based Japanese speech intelligibility test, Journal of the Acoustical Society of Japan, vol. 63, no. 4, pp. 196-205, Apr. 2007 (in Japanese). PDF available.

  37. K. Kondo and K. Nakagawa, A Speech Packet Loss Concealment Method Using Linear Prediction, IEICE Trans. of the Inf. and Syst., vol. E89-D, no. 2, pp. 806-813, Feb. 2006. PDF available.

  38. K. Kondo, H. Kanazawa, A. Yoshii, H. Kato, T. Seino, K. Nakagawa, " On Data Embedding Methods Applicable to ADPCM Family of Codecs, " Trans. of the IEICE D-II, vol. J87-D-II, no. 5, pp. 1043-1051, May, 2004 (in Japanese).PDF available.

  39. K. Tanaka, K. Takano, K. Kondo, K. Nakagawa, Eye Openings in WDM Transmission Systems with Optical SSB Modulation Using All-optical Hilbert Transformer, Trans. of the IEICE B, vol. J85-B, no. 8, pp. 1371-1381, Aug. 2002 (in Japanese).

  40. K. Tanaka, K. Takano, K. Kondo, K. Nakagawa, Eye Openings in WDM Transmission Systems with Optical SSB Modulation Using a Hilbert Transformer and with Electrical Low-Frequency Band Equalization, Trans. of the IEICE B, vol. J85-B, no. 2, pp. 159-168, Feb. 2002 (in Japanese).

  41. K. Tanaka, K. Takano, K. Kondo, K. Nakagawa, " Improved sideband suppression of optical SSB modulation using all-optical Hilbert transformer," Electronics Letters vol. 38, no. 3, pp. 133-134, Jan. 2002.

  42. J. Picone, T. Staples, K. Kondo and N. Arai, "Kanji to Hiragana Conversion Based on a Length-Constrained N-gram Analysis, " IEEE Transactions on Speech and Audio Processing, vol. 7, no. 6, pp. 985-696, Nov. 1999. PDF available.

  43. K. Kondo and C. Hemphill, "A WWW Browser Using Speech Recognition and its Evaluation," Transactions of the IEICE D-II, vol. J81-D-II, no. 2, pp. 257-267, Feb. 1998 (in Japanese).
    English translation available in Systems and Computers in Japan, vol. 29, no.10, Sept. 1998. PostScript available.
    Or, here is the English HTML version (not very pretty, and you need Japanese fonts to display part of the document properly).

  44. K. Kondo, Y. H. Kao and B. Wheatley, "Clustered Inter-phrase or Word Context-Dependent Models for Continuously Read Japanese," Journal of the Acoustical Society of Japan (E), vol. 16, no. 5, pp. 299-310, Sept. 1995.

  45. K. Kondo and M. Ohno, "Packet Transmission on ATM Networks Using a Variable Rate Embedded ADPCM Coding Scheme," IEEE Transactions on Communication, vol. 42, no. 2/3/4, pp. 243-247, Feb./Mar./Apr. 1994.

  46. K. Kondo, H. Gunji, Y. Eto, A. Gonda, K. Naka and H. Owashi, "A Video Coding Scheme for HDTV Digital VCRs," in Signal Processing of HDTV IV, E. Dubois and L. Chiariglione, editors, Elsevier, Amsterdam, pp. 59-66, 1993.

  47. K. Kondo and M. Ohno, "Packet Transmission on ATM Networks Using a Variable Rate Embedded ADPCM Coding Scheme," IEICE Transactions on Communication, vol. E-76-B, no. 4, pp. 420-430, Apr. 1993.

 

International and Domestic Conferences (refereed)

  1. ShuTanaka, Kazuhiro Kondo, "Improvement of Estimation Accuracy in BLE Indoor Position and Motion Direction Estimation System Using Bi-LSTM," Proc. IEEE Global Conference on Consumer Electronics, pp. 912-913 Nara, Japan, Oct. 2023.

  2. Masaki Hattori, Kazuhiro Kondo, "Estimation of Japanese Word Intelligibility Using CTC-Based Phoneme Recognition," Proc. IEEE Global Conference on Consumer Electronics, pp. 1043-1044Nara, Japan, Oct. 2023.

  3. Kazushi Nakazawa, Kazuhiro Kondo, "Non-Intrusive Speech Intelligibility Prediction of Speech With Additive Noise and Reverberation Using Multiple Deep Learning-Based Speech Enhancement," Proc. IEEE Global Conference on Consumer Electronics, pp. 1065-1067, Nara, Japan, Oct. 2023.

  4. Masaki, Hattori, Kazuhiro Kondo, " Estimation of Japanese word intelligibility by automatic speech recognition with noise adaptation," Proc. Internoise, 1-P-5, Chiba, Japan, Aug. 2023.

  5. Noriyuki Hayasaka, Kazuhiro Kondo, "Dome-Shaped Ultrasonic Jammer for speech privacy protection," Proc. Internoise, 1-P-7, Chiba, Japan, Aug. 2023.

  6. Kazushi Nakazawa, Kazuhiro Kondo, "Non-intrusive speech intelligibility prediction method for reverberant speech using neural network-based frequency segmentation and masking front-end," Proc. Internoise, 1-P-9, Chiba, Japan, Aug. 2023.

  7. Kazushi Nakazawa, Kazuhiro Kondo, "Non-Intrusive Speech Intelligibility Estimation Using Deep Learning With Speech Enhancement and Convolutional Layers," Proc. Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, Chiang Mai, Thailand, Nov. 2022.

  8. Kazushi Nakazawa, Kazuhiro Kondo, "Improving the accuracy of non-intrusive intelligibility estimation for reverberant speech using speech enhancement by optimizing the speech feature parameters," Proc. International Conference on Acoustics, Gyeongju, Korea, Oct. 2022.

  9. Noritake Sudo, Kazuhiro Kondo, "Towards laughter synthesis using voice conversion," Proc. International Conference on Acoustics, Gyeongju, Korea, Oct. 2022.

  10. Masaki Hattori, Kazuhiro Kondo, "Estimation Of Japanese Word Intelligibility Using DNN-Based Speech Recognition Systems," Proc. International Conference on Acoustics, Gyeongju, Korea, Oct. 2022.

  11. Toya Kitagawa, Kazuhiro Kondo, Kazushi Nakazawa, Sara Asai, "Evaluation of Home Appliance Speakers with Correction Filters for Voice Communications," Proc. IEEE Global Conference on Consumer Electronics, pp. 46-47, Osaka, Japan, Oct. 2022.

  12. Noritake Sudo, Kazuhiro Kondo, "Evaluation of Linguistic Properties of Synthesized Laughter Using its Transcription," Proc. IEEE Global Conference on Consumer Electronics, pp. 1-2, Osaka, Japan, Oct. 2022.

  13. Noriyuki Hayasaka, Kazuhiro Kondo, "Audibility of added ultrasonic modulation signal for speech jamming," Proc. IEEE Global Conference on Consumer Electronics, pp. 5-6, Osaka, Japan, Oct. 2022.

  14. Kazushi Nakazawa, Kazuhiro Kondo, "IMPROVEMENTS TO NON-INTRUSIVE INTELLIGIBILITY PREDICTION FOR REVERBERATION AND ADDITIVE NOISE-DEGRADED SPEECH," Proc. Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, Dec. 2021.

  15. Kaito Echizenya, Kazuhiro Kondo, "The Effect of Density and Placement of BLE Beacons on Indoor Location and Motion Direction Estimation Accuracy" Proc. Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, Dec. 2021.

  16. Kota Muroi, Kazuhiro Kondo, "Speech Manipulation Detection Method Using Speech Fingerprints and Timestamp Data," Proc. IIHMSP, IIH-MSP-2021-0259, Oct. 2021.

  17. Toya Kitagawa, Kazuhiro Kondo, Kazushi Nakazawa, Yasushi Nakajima, "Quality Evaluation of Voice Synthesis Tools for Home Appliance Voice Communications," Proc. IEEE Global Conference on Consumer Electronics, pp. 127-128, Kyoto, Japan, Oct. 2021.

  18. Tsubasa Maruyama, Kazuhiro Kondo, "Effect of Snow Conditions on Speech Intelligibility ~Introduction of Wind Velocity, Temperature and Humidity~," Proc. IEEE Global Conference on Consumer Electronics, pp. 116-117, Kyoto, Japan, Oct. 2021.Outstanding Student Poster Award Bronze Prize

  19. Kota Muroi, Kazuhiro Kondo, Shinya Takahashi, "Speech Manipulation Detection Method using Audio Watermarking," Proc. IEEE Global Conference on Consumer Electronics, pp. 108-109, Kyoto, Japan, Oct. 2021.

  20. Kaito Echizenya, Kazuhiro Kondo, "Comparison of RSSI Processing Methods for Improved Estimation Accuracy in BLE Indoor Position and Movement Direction Estimation System Using DNN," Proc. IEEE Global Conference on Consumer Electronics, pp. 171-172, Kyoto, Japan, Oct. 2021.

  21. Kazushi Nakazawa, Kazuhiro Kondo, "The estimation of non-referential speech intelligibility using DNN De-reverberation with SRMR value," Proc. IEEE Global Conference on Consumer Electronics, pp. 521-522, Kyoto, Japan, Oct. 2021.

  22. Kota Muroi, Kazuhiro Kondo, "Speech Manipulation Detection Method Using Speech Fingerprints and Timestamp Data," Proc. 17th International Conf. on Intelligent Inf. Hiding and Multimedia Signal Process., Kaosiung, Taiwan, Oct. 2021.

  23. Kaito Echizenya, Kazuhiro Kondo, "The Effect of Density and Placement of BLE Beacons on Indoor Location and Motion Direction Estimation Accuracy," Proc. Asia Pacific Sig. Process. Assoc. Annual Summit and Conference (APSIPA-ASC), Tokyo, Japan, Dec. 2021.

  24. Kazushi Nakazawa, Kazuhiro Kondo, "IMPROVEMENTS TO NON-INTRUSIVE INTELLIGIBILITY PREDICTION FOR REVERBERATION AND ADDITIVE NOISE-DEGRADED SPEECH," Proc. Asia Pacific Sig. Process. Assoc. Annual Summit and Conference (APSIPA-ASC), Tokyo, Japan, Dec. 2021.

  25. Kaito Echizenya, Kazuhiro Kondo, "Indoor position and moving direction estimation for smartphone users by applying deep learning to BLE signal strength," Proc. 17th IEEE Transdisciplinary-Oriented Workshop for Emerging Researchers (TOWERS), p. 33, B5, Nov. 2020. Supporter's GroupAward

  26. Kazushi Nakazawa, Kazuhiro Kondo, "On Non-Reference Speech Intelligibility Estimation Using DNN De-Reverberation," Proc. IEEE Global Conference on Consumer Electronics, Kobe, Japan, Oct. 2020. Outstanding Poster Award Outstanding Prize

  27. Tsuyoshi Miyagawa, Kazuhiro Kondo, "Towards a Variable Audio Spot Using Flexible Parametric Array Loudspeakers," Proc. IEEE Global Conference on Consumer Electronics, Kobe, Japan, Oct. 2020. Outstanding Paper Award Gold Prize

  28. Kaito Echizennya, Kazuhiro Kondo, Toya Kitagawa, "Evaluation of the Real-Time Indoor Location and Motion Direction Estimation System Applying DNN to RSSI Fingerprints of BLE Beacons," Proc. IEEE Global Conference on Consumer Electronics, Kobe, Japan, Oct. 2020.

  29. Kaito Echizennya, Kazuhiro Kondo, "Estimation of indoor position and motion direction for smartphones using DNN to BLE beacon signal strength," Proc. IEEE International Conference on Consumer Electronics Taiwan, Sept. 2020.

  30. Toya Kitagawa, Kazuhiro Kondo, "3D Audio Navigation System for the Visually Impaired," Proc. 16th IEEE Transdisciplinary-Oriented Workshop for Emerging Researchers (TOWERS), p. 21A5, Oct. 2019. Socio-Next Award

  31. Toya Kitagawa, Kazuhiro Kondo, "Detailed Evaluation of a Wind Noise Reduction Method using DNN for 3D Audio Navigation System Audio Augmented Reality for Bicycles," Proc. IEEE Global Conference on Consumer Electronics, pp. 887-888, Osaka, Japan, Oct. 2019.

  32. Shuto Shibata, Kazuhiro Kondo, "Multivariate Analysis of Effect of Snow Quality on Speech Intelligibility," Proc. IEEE Global Conference on Consumer Electronics, pp. 895-896, Osaka, Japan, Oct. 2019.

  33. Hiroyuki Aida, Kazuhiro Kondo, "Pinpoint Active Noise Control Using Audio Spot Generated with Multiple Parametric Speakers," Proc. IEEE Global Conference on Consumer Electronics, pp. 899-900, Osaka, Japan, Oct. 2019.

  34. Kazuhiro Kondo, Shinichiro Osanai, "Audio Spotlight using Subdivided AM Sideband Wave Delivery from Separate Ultrasonic Speakers," Proc. ICA, pp. 1037-1044, Aachen, Germany, Sept. 2019.

  35. Hiroto Takahashi, Kazuhiro Kondo, "On Non-Reference Speech Intelligibility Estimation Using DNN Noise Reduction," Proc. ICA, pp. 3103-3108, Aachen, Germany, Sept. 2019.

  36. Kazushi Nakazawa, Kazuhiro Kondo, "De-Reberberation using CNN for Non-Reference Reverberant Speech Intelligibility Estimation," Proc. ICA, pp. 3098-3102, Aachen, Germany, Sept. 2019.

  37. Shinnys Takahashi, Kazuhiro Kondo, "An Interrogation Speech Manipulation Detection Method using Speech Fingerprinting and Watermarking," Proc. IIH-MSP, Sendai, Japan, Nov. 2018.

  38. Shuto Shibata, Kazuhiro Kondo, "On the Comparative Effect of Snowfall, Accumulation, and Density on Speech Intelligibility," Proc. APSIPA-ASC, Honolulu, Hawaii, Nov. 2018.

  39. Toya Kitagawa, Kazuhiro Kondo, "Towards a Wind noise reduction method using DNN," Proc. The 15th IEEE Transdisciplinary-Oriented Workshop for Emerging Researchers, A16, p. 28, Nov. 2018

  40. Kazushi Nakazawa, Kazuhiro Kondo, "De-reverberation Using DNN for Non-Reference Reverberant Speech Intelligibility Estimation," Proc. IEEE Global Conference on Consumer Electronics, Nara, Japan, Oct. 2018.

  41. Hiroto Takahashi, Kazuhiro Kondo, "On a Reference Signal Estimation from Noisy Speech Using Deep Learning for Intelligibility Estimation," Proc. IEEE Global Conference on Consumer Electronics, Nara, Japan, Oct. 2018.

  42. Toya Kitagawa, Kazuhiro Kondo, "Evaluation of a Visually Handicapped Navigation System Using 3D Audio on a Smartphone Under Realistic Conditions," Proc. IEEE Global Conference on Consumer Electronics, Nara, Japan, Oct. 2018.

  43. Kazuhiro Kondo, Kazuya Taira, Yosuke Kobayashi, "Binaural Speech Intelligibility Estimation Using Deep Neural Networks," Proc. Interspeech, Hyderabad, India, Sept. 2018.

  44. Toya Kitagawa, Kazuhiro Kondo, "Evaluation of a wind noise reduction method using DNN for Bicycle Audio Augmented Reality Systems," Proc. IEEE International Conference on Consumer Electronics - Taiwan, Taichung, Taiwan, pp. 369-370, May 2018.

  45. Ken Matsuda, Kazuhiro Kondo, "Towards an Accurate Route Guidance System for the Visually Impaired Using 3D Audio," Proc. IEEE Global Conference on Consumer Electronics, Kyoto, Japan, pp. 264-265, Oct. 2017.

  46. Toya Kitagawa, Kazuhiro Kondo, "On a Wind Noise Countermeasure for Bicycle Audio Augmented Reality Systems," Proc. IEEE Global Conference on Consumer Electronics, Kyoto, Japan, pp. 231-232, Oct. 2017.

  47. Shinnya Takahashi, Kazuhiro Kondo, "Towards an interrogation speech manipulation detection method using speech fingerprinting," in Pan JS., Watada J., Jain L. (eds) Advances in Intelligent Information Hiding and Multimedia Signal Processing, Proc. IIH-MSP-2017, Smart Innovation, Systems and Technologies, Springer, vol. 82, pp. 121-129, July, 2017.

  48. Yosuke Kobayashi, Kengo Ohta, Kazuhiro Kondo, Shuichi Sakamoto, "Speech intelligibility prediction method using machine learning for outdoor public address systems," Proc. 5th Joint Meeting, Acoust. Soc. Am. and Acoust. Soc. Japan, Honolulu, HI, Nov. 2016.

  49. Kazuya Taira, Yosuke Kobayashi, Kazuhiro Kondo, "Estimation of binaural speech intelligibility based on the better ear model," Proc. 5th Joint Meeting, Acoust. Soc. Am. and Acoust. Soc. Japan, Honolulu, HI, Nov. 2016.

  50. Kazuhiro Kondo, Joji Yamada, "On a Synchronization Method for Audio Watermarks Robust Against Aerial Transmission Using Embedded Random Synchronization Pattern," Proc. Int. Conf. on Intellgent Inf. Hiding and Multimedia Sig. Process., Kaohsiung, Taiwan, pp. 123-130 , Nov. 2016. Best Paper Award

  51. Kazuhiro Kondo, Kazuya Taira, "Introduction and Comparison of Machine Learning Techniques to the Estimation of Binaural Speech Intelligibility," Proc. Int. Conf. on Intellgent Inf. Hiding and Multimedia Sig. Process., Kaohsiung, Taiwan, pp. 167-174, Nov. 2016.

  52. Kazuhiro Kondo, Makoto Oba, Shun Kashiwase, "Efficiency Evaluation of a Super-Directive Masking System That Tracks the Masker Beam Towards the Target Human Head," Proc. IEEE Global Conference on Consumer Electronics, Kyoto, Japan, pp. 565-566, Oct. 2016

  53. Chiaki Takahashi, Kazuhiro Kondo, "Accuracy Evaluation of an Indoor Positioning Method Using iBeacons," Proc. IEEE Global Conference on Consumer Electronics, Kyoto, Japan, pp. 425-426, Oct. 2016

  54. Ken Matsuda, Kazuhiro Kondo, "Towards a Navigation System for the Visually Impaired Using 3D Audio," Proc. IEEE Global Conference on Consumer Electronics, Kyoto, Japan, pp. 433-434, Oct. 2016. IEEE CES West Japan Chapter Young Researcher Award

  55. Keisuke Matsuura, Kazuhiro Kondo, "A Singing Voice Attenuation System Using Active Noise Control," Proc. IEEE Global Conference on Consumer Electronics, Kyoto, Japan, pp. 440-441, Oct. 2016

  56. Kazuya Taira, Kazuhiro Kondo, "An ambient noise clustering method for Japanese speech intelligibility estimation," Proc. Asia-Pacific Signal and Inf. Process. Assoc. - Annual Summit and Conf., Hong Kong, pp. 101-104, Dec. 2015.

  57. Keisuke Matsuura, Kazuhiro Kondo, "Towards a Singing Voice Attenuation System Using Active Noise Control," Proc. IEEE Global Conference on Consumer Electronics, Osaka, Japan, pp. 242-243, Oct. 2015

  58. Chiaki Takahashi, Kazuhiro Kondo, "Indoor Positioning Method for Augmented Audio Reality Navigation Systems Using iBeacons," Proc. IEEE Global Conference on Consumer Electronics, Osaka, Japan, pp. 468-249, Oct. 2015.

  59. Makoto Ohba, Kazuhiro Kondo, "On an Efficient Masking System Using Human Head Tracking Parametric Speaker System," Proc. IEEE Global Conference on Consumer Electronics, Osaka, Japan, pp. 222-223, Oct. 2015.

  60. Joji Yamada, Kazuhiro Kondo, "Comparison of Synchronization Methods for Robust Audio Watermarks," Proc. IEEE Global Conference on Consumer Electronics, Osaka, Japan, pp. 182-183, Oct. 2015.

  61. Yosuke Kobayashi, Kazuhiro Kondo, "An ambient noise clustering method for Japanese speech intelligibility estimation," Proc. INCE Inter-noise, San Fracisco, CA, Aug. 2015.

  62. Kazuhiro Kondo, Estimation of Japanese DRT Intelligibility Using Articulation Index Band Correlations,Asia-Pacific Signal and Inf. Process. Assoc. - Annual Summit and Conf., Siem Reap, Cambodia, Dec. 2014.

  63. Yosuke Kobayashi, Kazuhiro Kondo, Bootstrap masker generation method for speech masking systems,Proc. 43rd International Congress and Exhibition on Noise Control EngineeringNov. 2014.

  64. Kazuhiro Kondo, Yasuhiro Abe, A Voice Picking System Using Localized Navigation Speech and Head Tracking,Proc. IEEE Global Conference on Consumer Electronics, Makuhari, Japan, pp. 525-528, Oct. 2014.

  65. Shun Kashiwase, Kazuhiro Kondo, Towards a Parametric Speaker System with Human Head Tracking Beam Control,Proc. IEEE Global Conference on Consumer Electronics, Makuhari, Japan, pp. 22-23, Oct. 2014.

  66. Yuta Takahashi, Kazuhiro Kondo, Comparison of Two Classification Methods for Musical Instrument Identification,Proc. IEEE Global Conference on Consumer Electronics, Makuhari, Japan, pp. 67-68, Oct. 2014.

  67. Daiki Suzuki, Kazuhiro Kondo, Application of ANC for Singing Voice Attenuation,Proc. IEEE Global Conference on Consumer Electronics, Makuhari, Japan, pp. 63-64, Oct. 2014.

  68. T. Sakano, Y. Kobayashi, K. Kondo, "Single-Ended Estimation of Speech Intelligibility Using the ITU P.563 Feature Set," Proc. ISCA Interspeech, Singapore, Sept. 2014.

  69. K. Kondo, H. Sakurai, "Gender-Dependent Babble Maskers Created from Multi-Speaker Speech for Speech Privacy Protection," Proc. IEEE International Conference on Intelligent Information Hiding and Multimedia Signal ProcessingKitakyushu, Japan, Aug. 2014.

  70. K. Kondo, N. Anazawa, Y. Kobayashi “Characteristics Comparison of Two Audio Output Devices for Augmented Audio Reality,” Asia-Pacific Signal and Inf. Process. Assoc. - Annual Summit and Conf., Kaohsiung, Taiwan, Oct. 2013.

  71. M. Miura, H. Watanabe, K. Kawai, K. Kondo “Intelligibility Comparison of Speech Annotation under Wind Noise in AAR Systems for Pedestrians and Bicyclists using Two Output Devices,” Asia-Pacific Signal and Inf. Process. Assoc. - Annual Summit and Conf., Kaohsiung, Taiwan, Oct. 2013.

  72. K. Kondo, T. Komiyama, S. Kashiwada “Towards Gender-Dependent Babble Maskers for Speech Privacy Protection,” Proc. IEEE International Conference on Intelligent Information Hiding and Multimedia Signal ProcessingBeijing, China, Oct. 2013.

  73. Kazuhiro Kondo, “Towards Estimation of Quality of Watermarked Audio Signal using Objective Measures,” Proc. IEEE International Conference on Intelligent Information Hiding and Multimedia Signal ProcessingBeijing, China, Oct. 2013.

  74. A. Nishimura, M. Unoki, K. Kondo, A. Ogihara, “Objective evaluation of sound quality for attacks on robust audio watermarking,” Proc. International Congress on Acoustics, Montreal, Canada, June, 2013.

  75. Yoshimi Yamaguchi, Kazuhiro Kondo, “A Watermark Method for Embedding Short Information Split into Audio and Video Signals,” Proc. IEEE International Conference on Intelligent Information Hiding and Multimedia Signal ProcessingPiraeus, Greece, July 2012.

  76. Kazuhiro Kondo, “On the Use of Objective Quality Measures to Estimate Watermarked Audio Quality,” Proc. IEEE International Conference on Intelligent Information Hiding and Multimedia Signal ProcessingPiraeus, Greece, July 2012.

  77. Tohru Shibuya, Yosuke Kobayashi, Hitomi Watanabe, Kazuhiro Kondo, "Differences in the Effect of Time-Expanded and Time-Contracted Speech on Intelligibility by Phonetic Feature," Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Kyoto, Japan, Mar. 2012.

  78. Kazuihiro Kondo, "The Effect of Speaker and Noise Type on the Accuracy of Estimated Speech Intelligibility Using Objective Measures," Proc. the Seventh IEEE International Conference on Intelligent Information Hiding and Multimedia Signal ProcessingDalian, China, Oct. 2011.

  79. Toru Shibuya, Yousuke Kobayashi, Kazuhiro Kondo, "Differences in the effect of speech rate on intelligibility in artificially speed-altered speech by phonetic feature," Proc. 40th International Congress and Exhibition on Noise Control EngineeringOsaka, Japan, Sept. 2011.

  80. Yosuke Kobayashi, Kazuhiro Kondo, "On distortion measures effective for the estimation of Japanese speech intelligibility of localized speech with competing noise in virtual acoustic space," Proc. 40th International Congress and Exhibition on Noise Control Engineering, Osaka, Japan, Sept. 2011.

  81. Kazuhiro Kondo, "Improving accuracy of estimated speech intelligibility scores by speech recognizers using multi-condition noise-adapted models," Proc. 40th International Congress and Exhibition on Noise Control Engineering Osaka, Japan, Sept. 2011.

  82. Kazuhiro Kondo, "Optimum orientation of parallel parametric speakers for simultaneous guide audio with minimum cross-talk," Proc. 40th International Congress and Exhibition on Noise Control EngineeringOsaka, Japan, Sept. 2011.

  83. Kazuhiro Kondo "Estimation of speech intelligibility using objective measures," Proc. 40th International Congress and Exhibition on Noise Control EngineeringOsaka, Japan, Sept. 2011.

  84. Naoya Anazawa, Yosuke Kobayashi, Hiroyuki Yagyu, Takayuki Kanda, Kazuhiro Kondo, "Evaluation of localized speech intelligibility from bone-conduction headphones with competing noise for augmented audio reality," Proc. 40th International Congress and Exhibition on Noise Control Engineering Osaka, Japan, Sept. 2011.

  85. Tomohiro Komiyama, Kazuhiro Kondo, "An efficient speech privacy system using speaker-dependent babble noise as maskers," Proc. 40th International Congress and Exhibition on Noise Control Engineering Osaka, Japan, Sept. 2011.

  86. Masanori Miura, Hideharu Isaka, Kazuhiro Kondo, "Sound presentation of audio reality systems in environment with wind noise," Proc. 40th International Congress and Exhibition on Noise Control Engineering Osaka, Japan, Sept. 2011.

  87. Yosuke Kobayashi, Kazuhiro Kondo, Kiyoshi Nakagawa, and Yukio Iwaya, "On the Influence of Coding Method on Japanese Speech Intelligibility in Virtual 3D Audio Space," Proc. AES 40th International Conf. on Spatial Audio, Tokyo, Japan, Oct. 2010.

  88. Kazuhiro Kondo, Takayuki Kanda, Yosuke Kobayashi, and Hiroyuki Yagyu, "Speech Intelligibility of Diagonally Localized Speech with Competing Noise Using Bone-Conduction Headphones," Proc. Interspeech, Tue-Ses2-P3.1, pp. 1213-1216, Makuhari, Japan, Sept. 2010.

  89. Kazuhiro Kondo and Yusuke Takano, "Estimation of Two-to-One Forced Selection Intelligibility Scores by Speech Recognizers Using Noise-Adapted Models," Proc. Interspeech, Mon-Ses2-P4.2, pp. 302-305, Makuhari, Japan, Sept. 2010.

  90. Kazuhiro Kondo, "Evaluation of a Stereo Audio Data Hiding Method Using Inter-Channel Decorrelator Polarity," Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp. 277-280, Dallas, TX, Mar. 2010.

  91. Yosuke Kobayashi, Kazuhiro Kondo, and Kiyoshi Nakagawa, "Influence of Various Stereo Coding Modes on Encoded Japanese Speech Intelligibility with Competing Noise," Proc. International Workshop on the Principles and Applications of Spatial Hearing (IWPASH), Miyagi, Japan, Nov. 2009.

  92. Takayuki Kanda, Hiroyuki Yagyu, Yosuke Kobayashi, Kazuhiro Kondo, and Kiyoshi Nakagawa, "Comparison of Localized Speech Intelligibility with Competing Noise Using Regular and Bone-Conduction Stereo Headphones," Proc. International Workshop on the Principles and Applications of Spatial Hearing (IWPASH), Miyagi, Japan, Nov. 2009.

  93. Kazuhiro Kondo, "A Data Hiding Method for Stereo Audio Signals Using the Polarity of the Inter-Channel Decorrelator," Proc. International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIHMSP), pp. 86-89, Kyoto, Japan, Sept. 2009. PDF available.

  94. Masanori Miura, Yuki Fukazawa, Kazuhiro Kondo, and Hideharu Isaka, "Towards Reliable Articulation Evaluation Inside Automobiles Using Binaural Mannequins," Proc. 38th International Congress and Exhibition on Noise Control Engineering (Internoise), Ottawa, Canada, Aug. 2009.

  95. Yusuke Takano and Kazuhiro Kondo, "On Estimation of Two-to-One Selection-Based Intelligibility Score Using Speech Recognition," Proc. IEEE International Symposium on Consumer Electronics (ISCE2009), pp. 518-522, Kyoto, Japan, May 2009.

  96. Yosuke Kobayashi, Kazuhiro Kondo and Kiyoshi Nakagawa, "Intelligibility of Low Bit Rate MPEG-Coded Japanese Speech in Virtual 3D Audio Space," Proc. 15th International Conference on Auditory Display, pp. 99-102, Copenhagen, Denmark, May, 2009.

  97. Masanori Miura, Kazuhiro Kondo, and Hideharu Isaka, "On Articulation of Automobile Navigation Speech using Piezoelectric Speakers," Proc. 37th International Congress and Exhibition on Noise Control Engineering (Internoise), Shanghai, China, Oct. 2008.

  98. Yuuki Akiba, Kazuhiro Kondo, Katsumi Takano, Kiyoshi Nakagawa, "Comparison of Audio Packet Loss Concealment Methods using LPC Interpolation on the Time-Frequency MDCT Frame," Proc. 37th International Congress and Exhibition on Noise Control Engineering (Internoise), Shanghai, China, Oct. 2008.

  99. Takahito Chiba, Yuichiro Kitashima, Noriyasu Yano, Kazuhiro Kondo, and Kiyoshi Nakagawa, "On the Influence of Localized Position of Interference Noise on the Intelligibility of Read Japanese Words in Remote Conference Systems," Proc. 37th International Congress and Exhibition on Noise Control Engineering (Internoise), Shanghai, China, Oct. 2008.

  100. K. Hiratsuka, K. Kondo, and K. Nakagawa, “On the Accuracy of Estimated Synchronization Positions for Audio Digital Watermarks using the Modified Patchwork Algorithm on Analog Channels,” Proc. International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIHMSP), pp. 628-631, Harbin, China, Aug. 2008.

  101. K. Kondo, and K. Nakagawa, “A Digital Watermark for Stereo Audio Signals Using Variable Interchannel Delay in High Frequency Bands,” Proc. International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIHMSP), pp. 624-627, Harbin, China, Aug. 2008. PDF available.

  102. Y. Komatsu, T. Hiramatsu, Y. Kitashima, K. Kondo, and K. Nakagawa, “Accuracy of estimated position using ZigBee radio signals,” Proc. IPSJ Symp. on Multimedia, Distributed, Cooperative and Mobile (DICOMO), vol. 2007, pp. 277-280, Toba, Japan, Jul. 2007.

  103. Masato Anzai, Kazuhiro Kondo, Kiyoshi Nakagawa, Hideharu Isaka, and Katsuyoshi Suzuki, “On an active vibration control system of impulsive bang noise for floor units,” Proc. 35th International Congress and Exposition on Noise Control Engineering (Internoise 2006), Honolulu, Hawaii, Dec. 2006.

  104. Yuichiro Kitashima, Kazuhiro Kondo and Kiyoshi Nakagawa, "A speech communication environment using open source software library for active sound image control," Proc. 4th Joint Meeting of the Acoustical Society of America and the Acoustical Society of Japan, 5pSC46, Honolulu, Hawaii, Dec. 2006.

  105. Rui Kaga, Kazuhiro Kondo, Kiyoshi Nakagawa, and Masaya Fujimori, "Towards estimation of Japanese intelligibility scores using objective voice quality assessment measures," Proc. 4th Joint Meeting of the Acoustical Society of America and the Acoustical Society of Japan, 4aSC44, Honolulu, Hawaii, Dec. 2006.

  106. H. Terada, K. Kondo, and K. Nakagawa, “On the accuracy of speech source direction identification on the horizontal plane using 3-D audio displays,” Proc. 4th Joint Meeting of the Acoustical Society of America and the Acoustical Society of Japan, 3pSP35, Honolulu, Hawaii, Nov. 2006.

  107. K. Kondo, T. Fujita, and Kiyoshi Nakagawa, “On Equalization of Bone Conducted Speech for Improved Speech Quality,” Proc. IEEE International Symposium on Signal Processing and Information Technology (ISSPIT), T32.3f, pp. 426-431, Vancouver, Canada, Aug. 2006. PDF available.

  108. Y. Kitashima, H. Terada, K. Kondo, and K. Nakagawa, “Towards a Remote Conference System Using 3-D Audio for Intelligible Speech Collaboration,” Proc. IPSJ Symp. on Multimedia, Distributed, Cooperative and Mobile (DICOMO), vol. 2006, no. 6, pp. 41-44, Kagawa, Japan, Jul. 2006.

  109. M. Fujimori, K. Kondo, K. Takano, and K. Nakagawa, “On a revised word-pair list for the Japanese intelligibility test,” Proc. International Symposium on Frontiers in Speech and Hearing Research, Tokyo, Japan, Mar. 2006.

  110. T. Niizeki, K. Kondo, K. Takano, and K. Nakagawa, “On quality improvement of degraded MPEG audio due to packet loss using highly compressed overhead data,” Proc. International Symposium on Frontiers in Speech and Hearing Research, Tokyo, Japan, Mar. 2006.

  111. Katsumi Takano, Takayuki Yumoto, Kazuhiro Kondo and Kiyoshi Nakagawa, "Power distribution of optical comb generated by fiber ring with AO frequency shifters," The 10th Optoelectronics and Communications Conference (OECC2005), 6D4-3, pp.254-255, Seoul, Korea, July, 4-8, 2005.

  112. K. Kondo and K. Nakagawa, “Experimental Evaluation of an Active Speech Control Method,” Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing, AE-P2.4, Philadelphia, Pennsylvania, Mar. 2005.

  113. K. Kondo and K. Nakagawa, “A Packet Loss Concealment Method Using Recursive Linear Prediction,” Proceedings of the International Conference on Spoken Language Processing, FrA1502p, Jeju, Korea, Oct. 2004.

  114. S. Takehana, K. Kondo and K. Nakagawa, “A Data Hiding Method Using Linear Prediction,” Proc. of the 18th Congress on Acoustics, Th. P1.04, Kyoto, Japan, Apr. 2004.

  115. Y. Sasaki, K. Nakagawa, K. Takano and K. Kondo, “Self-restoration properties of VWP networks by spare wavelength optimization,” Proceedings of the Optoelectronics and Communications Conference, 15D1-3, Shanghai, China, Oct. 2003.

  116. K. Kondo and K. Nakagawa, “On Long Term Prediction for Active Cellular Speech Emission Control,” Proceedings of the Internoise 2003, P26-15, Cheju, Korea, Aug. 2003.

  117. K. Kondo and K. Nakagawa, “Active Speech Cancellation for Cellular Speech,” Proceedings of the International Conference on Spoken Language Processing, Fr55Bp2, Denver, Colorado, Sept. 2002.

  118. Kikuji Tanaka, Katsumi Takano, Kazuhiro Kondo and Kiyoshi Nakagawa, "All-Optical Hilbert Transformer Implementation for Fiber-Optic Single Sideband Modulator," Proc. 5th International Symp.on Contemporary Photonics Technology, Jan. 2002.

  119. Kazuhiro Kondo, Ryo Izumi and Kiyoshi Nakagawa, “Towards a Robust Speech Intelligibility Test in Japanese,” Proc. of the 17th International Congress on Acoustics, 7P.39, Rome, Italy, Sept. 2001.

  120. Kikuji Tanaka, Katsumi Takano, Kazuhiro Kondo and Kiyoshi Nakagawa,“Eye-opening Characteristics of Optical SSB Modulation using Hilbert Transformer,”The 4th Pacific Rim Conference on Laser and Electro-Optics (CLEO/Pacific Rim 2001), ThB1-4, pp.II554-555, Chiba, Japan, July 15-19, 2001.

  121. Kikuji Tanaka, Katsumi Takano, Kazuhiro Kondo and Kiyoshi Nakagawa, “Characteristics of Fiber-Optic SSB Modulation using Optical Hilbert Transformer,” Optoelectronics and Communications Conference (OECC2001), pp.600-601, Sydney, Australia, (July 1-5, 2001)

  122. K. Kondo and C. Hemphill, "Surfin' the World Wide Web with Japanese," Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing, Munich, Germany, Apr. 1997.

  123. K. Kondo and C. Hemphill, "Surfin' the World Wide Web with Japanese," Proceedings of Texas Instruments Corporate R & D Technical Conference, Dallas, Texas, Aug. 1996.

  124. K. Kondo, "Connected Digit Recognition with Pitch Accent-Dependent Models," Proceedings EUROSPEECH 95, Madrid, Spain, Sept. 1995.

  125. K. Kondo, Y. H. Kao and B. Wheatley, "On Inter-phrase Context Dependencies in Continuously Read Japanese Speech," Proceedings of the International Conference on Spoken Language Processing, Yokohama, Japan, Sept. 1994.

  126. B. Wheatley, K. Kondo, W. Anderson and Y. Muthusamy, "An Evaluation of Cross-Language Adaptation for Rapid HMM Development in a New Language," Proceedings of the International Conference on Acoustics, Speech and Signal Processing, Adelaide, Australia, Apr. 1994.

  127. K. Kondo, J. Picone and B. Wheatley, "A Comparative Analysis of Japanese and English Digit Recognition," Proceedings of the international Conference on Acoustics, Speech and Signal Processing, Adelaide, Australia, Apr. 1994.

  128. B. Wheatley, K. Kondo and W. Anderson, "Cross-Language Acoustic Model Adaptation: From English Phones to Japanese Digit Recognition," Proceedings of the IEEE Workshop on Automatic Speech Recognition, Snowbird, Utah, Dec. 1993.

  129. K. Kondo and M. Ohno, "Variable Rate Embedded ADPCM Coding Scheme for Packet Speech on ATM Networks," Proceedings of the IEEE GLOBECOM, San Diego, California, Dec. 1990.

  130. T. Miyamoto, K. Kondo, T. Suzuki, Y. Asakawa and A. Ichikawa, "Single DSP 8 kbps Speech Codec," Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing," Tokyo, Japan, Apr. 1996.

Invited Talks

  1. Kazuhiro Kondo, "Towards directivity and localization control of audible sound using ultrasonic signals,"Invited Lecture Series of the Acoustical Society Tohoku Chapter, May, 2022.

  2. Kazuhiro Kondo, "Recent Advances in the Estimation of Speech Intelligibility Using Objective Measures," RIEC International Symposium on Ultra-Realistic Interactive Acoustic Communications, Miyagi Zao Royal Hotel, Miyagi, Japan, May 20-21, 2016.

Reviews

  1. Kazuhiro Kondo,Noriyuki Hayasaka, "Towards Speech Privacy Protection Technology using Ultrasonics," Ultrasonics Techno, Nikko Publishing, vol. 34, no. 6, pp. 75-79 (in Japanese).



Domestic Conferences

  1. Noritake Suto, Kazuhiro Kondo, "Toward Laughter Expression and Speech Synthesis Using Speech Recognition," Proc. Acoust. Soc. Japan Spring Meeting, 2-P-37, pp. 1053-1054, March 2024 (in Japanese).
  2. Kento Sakurai, Masaki Hattori, Kazuhiro Kondo, "Estiatming speech intelligibility by speech recognition based on pre-trained model in a reverberant environment," Proc. Acoust. Soc. Japan Spring Meeting, 1-R-38, pp. 199-200, March 2024 (in Japanese).
  3. Kazushi Nakazawa, Kazuhiro Kondo, "Non-intrusive intelligibility Estimation for Degraded Speech Using Gated Activation Functions," Proc. Acoust. Soc. Japan Spring Meeting, 1-R-9, pp. 643-644, March 2024 (in Japanese).
  4. Masaki Hattor, Kazuhiro Kondo, "Estimation of Japanese word intelligibility using latent representation of speech recognition based on large-scale pre-training models" Proc. Acoust. Soc. Japan Spring Meeting, 1-R-4, pp. 631-632, March 2024 (in Japanese).
  5. Kento Sakurai, Masaki Hattori, Kazuhiro Kondo, "On a Japanese word intelligibility estimation method for unseen acoustic environments using pre-trained ASR models," Proc. Tohoku Region Young Researcher Workshop, YS-22-P03, March 2024 (in Japanese).
  6. Shuto Matsudo, Kazuhiro Kondo, "Evaluation of a collision warning system using ultrasonic sound input/output of smartphones," Proc. Tohoku Region Young Researcher Workshop, YS-22-P02, March 2024 (in Japanese).
  7. Takumi Osawa, Kazuhiro Kondo, "On the effect of wind velocity and direction on speech intelligibility of emergency broadcast speech under snow," Proc. Tohoku Region Young Researcher Workshop, YS-22-A14, March 2024 (in Japanese).
  8. Masaki Hattori, Kazuhiro Kondo, "On a Japanese word intelligibility estimation method using pre-trained models for speech annotation," Proc. Tohoku Region Young Researcher Workshop, YS-22-A13, March 2024 (in Japanese).
  9. Hayato Yamada, Kazuhiro Kondo, "Improvement and its evalations to the speech jammer systems that prevent eavesdropping with hidden recording devices," Proc. Tohoku Region Young Researcher Workshop, YS-22-A12, March 2024 (in Japanese).
  10. Yuta Nozaki, Kazuhiro Kondo, "Introduction of audio spotlights to head-tracking sound warning systems using Azure Kinect depth sensors," Proc. Tohoku Region Young Researcher Workshop, YS-22-A11, March 2024 (in Japanese).
  11. Noritake Suto, Kazuhiro Kondo, "On speech synthesis using laughter expression from ASR systems," Proc. Tohoku Region Workshop on Acoustics, 687-696, Nov. 2023 (in Japanese).
  12. Masaki Hattori, Kazuhiro Kondo, "On a Japanese word intelligibility estimation method using large-scale pre-trained ASR models," Proc. Tohoku Region Workshop on Acoustics, 6-5, Nov. 2023 (in Japanese).
  13. Kosei Yoshida, Kazuhiro Kondo, "On a collision warning system for smartphones using ultrasonic sounds," Proc. Tohoku Region Workshop on Acoustics, 6-3, Nov. 2023 (in Japanese).
  14. Masaki Hattori, Kazuhiro Kondo, "Japanese word intelligibility estimation by end-to-end speech recognition based on large pre-trained models," Tech. Rep. IEICE, EA2023-45/EMM2023-76, pp. 93-97, Nov. 2023 (in Japanese) .
  15. Masaki Hattori, Kazuhiro Kondo, "Estimation of Japanese Word Intelligibility using wav2vec v2.0 as Phonetic Recognizer," Proc. Acoust. Soc. Japan Autumn Meeting, 3-P-4, pp. , Sept. 2023 (in Japanese).
  16. Kazushi Nakazawa, Kazuhiro Kondo, Hiroshi Terashima, Shigeto Furukawa, Takuya Koumura, "Similarity Analysis of Intermediate Representation in Deep Neural Networks Optimized for Natural Sound Classification and Detection Threshold from Psychological Experiment in Inharmonic Complex," Proc. Acoust. Soc. Japan Autumn Meeting, 1-R-3, pp. , Sept. 2023 (in Japanese).
  17. Masaki Hattori, Kazuhiro Kondo, "Estimation of Japanese Word Intelligibility using CTC-Based Phone Recognition," Proc. Tohoku-Section Joint Convention of Institutes of Electrical and Information Engieers, 2F03, Sept. 2023 (in Japanese).
  18. Kosei Yoshida, Kazuhiro Kondo, "On a Probe Signal for Smartphone Collision Alert System using Extra-Auditory High Frequency Sound," Proc. Tohoku-Section Joint Convention of Institutes of Electrical and Information Engieers, 2F06, Sept. 2023 (in Japanese).
  19. Masaki Hattori, Kazuhiro Kondo, "Estimation of Speech Intelligibility Using Speech Recognition - Objective Estimation Using Cloud APIs and DNN-HMM -," Proc. Acoust. Soc. Japan Spring Meeting, 2-1-5, pp. 151-152, March 2023 (in Japanese).

  20. Noritake Suto, Kazuhiro Kondo, "Synthesis of Laughter in Natural Conversational Speech Using DNN Voice Conversion," Proc. Acoust. Soc. Japan Spring Meeting, 2-3Q-11, pp. 909-910, March 2023 (in Japanese).

  21. Kazushi Nakazawa, Kazuhiro Kondo, "Non-Intrusive Speech Intelligibility Estimation Using Audio Spectrogram Transformers," Proc. Acoust. Soc. Japan Spring Meeting, 3-4P-11, pp. 543-546, March 2023 (in Japanese).

  22. Shunsuke Kondo, Kazuhiro Kondo, "On Detection of Laughter and Verbal Chiming Using Machine Learning," Proc. Tohoku Region Young Researcher Workshop, YS-21-A13, March 2023 (in Japanese).

  23. Kohsei Yoshida, Kazuhiro Kondo, "On Ultrasonic Signal for Position Detection Using Smartphones," Proc. Tohoku Region Young Researcher Workshop, YS-21-A14, March 2023 (in Japanese).

  24. Kensho Segawa, Kazuhiro Kondo, "On Wind Noise Reduction Method for Bicycle Navigation Systems Using AAR," Proc. Tohoku Region Young Researcher Workshop, YS-21-A15, March 2023 (in Japanese).

  25. Masato Endo, Kazuhiro Kondo, "Drawing Simple Figures on Palms Using Ultrasonic Haptics and its Application to UIs," Proc. Tohoku Region Young Researcher Workshop, YS-21-P03, March 2023 (in Japanese).

  26. Koh Kawai, Kazuhiro Kondo, "Evaluation of Trumpet Performances," Proc. Tohoku Region Young Researcher Workshop, YS-21-P04, March 2023 (in Japanese).

  27. Shogo Sasaki, Kazuhiro Kondo, "Effect of Snow on Speech Intelligibility - Dependence on Source Height -," Proc. Tohoku Region Young Researcher Workshop, YS-21-P05, March 2023 (in Japanese).

  28. Shu Tanaka, Kazuhiro Kondo, "Accuracy Improvement of Indoor Positioning System Using Bluetooth by LSTM," Proc. Tohoku Region Young Researcher Workshop, YS-21-P63, March 2023 (in Japanese).

  29. Masaki Hattor, Kazuhiro Kondo, "Estimation of Japanese Speech Intelligibility Using Cloud Speech Recognition APIs," Proc. Tohoku Region Workshop on Acoustics, 5-9, Nov. 2022 (in Japanese).

  30. Kohsei Yoshida, "Towards Indoors Position Estimation Using Ultrasonics," Proc. Tohoku Region Workshop on Acoustics, 5-8, Nov. 2022 (in Japanese).

  31. Noriyuki Hayasaka, Kazuhiro Kondo, "On prevention of wiretapping with small recording devices using modulated ultrasonic waves -Investigation of effective modulation and transducer panel configuration for ultrasonic speech jammers-," Tech. Report of the IEICE/ASJ, EA2022-44, pp. 13-18 , Nov. 2022 (in Japanese).

  32. Noriyuki Hayasaka, Kazuhiro Kondo, "On the design of ultrasonic array speakers for jamming wiretaps using small recording devices," Proc. Acoust. Soc. Japan Autumn Meeting, 1-R-20, pp. 433-434, Sept. 2022 (in Japanese).

  33. Kazushi Nakazawa, Kazuhiro Kondo, "On a non-reference speech intelligibility estimation method for degraded speech using multiple pseudo-references with speech enhancement," Proc. Acoust. Soc. Japan Autumn Meeting, 1-R-32, pp. 469-472, Sept. 2022 (in Japanese).

  34. Noriyuki Hayasaka, Kazuhiro Kondo, "Synthesis of two ultrasonic waves to prevent wiretaps using small recording devices," Proc. Acoust. Soc. Japan Spring Meeting, 2-1P-4, pp. 359-360, March 2022 (in Japanese).

  35. Kazushi Nakazawa, Kazuhiro Kondo, "A study on non-refeerence speech intelligibility estimation using CNNs," Proc. Acoust. Soc. Japan Spring Meeting, 2-1P-11, pp. 763-764, March 2022 (in Japanese).

  36. Tsubasa Maruyama, Kazuhiro Kondo, "Effect of snowfall and wind on speech intelligibility," Proc. Acoust. Soc. Japan Spring Meeting, 3-4Q-4, pp. 765-766, March 2022 (in Japanese).

  37. Noritake Suto, Kazuhiro Kondo, "Laughter synthesis using emotional speech conversion with GANs," Proc. Tohoku Region Young Researcher Workshop, YS-20-A01, Feb. 2022 (in Japanese).

  38. Masaki Hattori, Kauhiro Kondo, "Speech intelligibility estimation using automatic speech recognition software JULIUS," Proc. Tohoku Region Young Researcher Workshop, YS-20-A02, Feb. 2022 (in Japanese).

  39. Kaito Echizenya, Kazuya Nakamura, Kazuhiro Kondo,"Evaluation of perceptual accuracy of sign signal under noise for 3-D audio navigation," Proc. Tohoku Region Young Researcher Workshop, YS-20-A03, Feb. 2022 (in Japanese).

  40. Kensho Segawa, Kazuhiro Kondo, "Wind noise reduction for bicycle AAR naviation systems," Proc. Tohoku Region Young Researcher Workshop, YS-20-P01, Feb. 2022 (in Japanese).

  41. Kazuya Nakamura, Kaito Echizenya, Kazuhiro Kondo, "Evaluation of distance perception accuracy of 3-D sign signals," Proc. Tohoku Region Young Researcher Workshop, YS-20-P02, Feb. 2022 (in Japanese).

  42. Kazushi Nakazawa, Kazuhiro Kondo, "On Frequency-Weighting Factors for Non-Reference Speech Intelligibility Prediction,"Proc. Tohoku Region Acoustics Forum, 4-5, Nov. 2021 (in Japanese).
    ASJ Tohoku best paper award.

  43. Noritake Suto, Kazuhiro Kondo"Speaker Classification Using Acoustic Features and Comparison to Human Classification,"Proc. Tohoku Region Acoustics Forum, 4-6, Nov. 2021 (in Japanese).

  44. Noriyuki Hayasaka, Kazuhiro Kondo, "A Synthesizer Capable of Generating Mixture of Two Modulated Signals with Differing Modulation Parameters," Proc. Tohoku Region Acoustics Forum, 4-10, Nov. 2021 (in Japanese).

  45. Kota Muroi, Kazuhiro Kondo, "A Speech Manipulation Detection Method using Audio Watermark,," Proc. Acoust. Soc. Japan Autumn Meeting, 2-1P-7, pp. 295-296 , , Sep. 2021 (in Japanese).

  46. Kazushi Nakazawa, Kazuhiro Kondo, " Estimating the Original Speech From Degraded Speech Using Japanese DRT Sentence Utterances," Proc. Acoust. Soc. Japan Autumn Meeting, 2-1P-11, pp. 307-310, Sep. 2021 (in Japanese).

  47. Noriyuki Hayasaka, Kazuhiro Kondo, "Preventing wiretaps by small recording devices using ultrasonic sounds," Proc. Acoust. Soc. Japan Autumn Meeting, 3-1Q-14, pp. 417-418, Sep. 2021 (in Japanese).

  48. Kaito Echizenya, Kazuhiro Kondo, "RSSI extrapolation method for BLE Indoor Positioning Using DNN," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 1A02, Aug. 2021 (in Japanese).

  49. Tsubasa Maruyama, Kazuhiro Kondo, Kazushi Nakazawa, "The Effect of Snow on Speech Intelligibility -Re-examination of wind velocity measurement methods-," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 2B02, Aug. 2021 (in Japanese).

  50. Noritake Suto, Kazuhiro Kondo, "Comparison of Normal Speech Utterances and Laughters in Synthesized Voice," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 2B03, Aug. 2021 (in Japanese).

  51. Yudai Ueshima, Kazuhiro Kondo, "A Non-Reference Word Speech Intelligibility Esitmation Using Wave-U-Nets for Reference Speech Estimation," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 2B04, Aug. 2021 (in Japanese).

  52. Kota Muroi, Kazuhiro Kondo, "Towards Tampering Detection Using Watermarks for Audio," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 2B05, Aug. 2021 (in Japanese).

  53. Yudai Ueshima, Kazuhiro Kondo, "A Non-Rererence Word-Speech Intelligibility Estimation Method for Additive Noise Degradation - Estimation of Reference Signal Using GANs," Proc. Acoustical Soc. Japan Spring Meeting, 2-1P-2, March 2021.

  54. Kazushi Nakazawa, Kazuhiro Kondo, "Non-Reference SPeech Intelligibility Estimation Using DNN for Reverant Speech Signal -Effect of Speaker Individuality -," Proc. Acoustical Soc. Japan Spring Meeting, 2-1P-4, March 2021.

  55. Tsuyoshi Miyakawa, Kazuhiro Kondo, "A Variable Audio Spot Using Flexible Ultrasonic Speakers," Proc. Acoustical Soc. Japan Spring Meeting, 2-1P-15, March 2021.

  56. Takuya Rachi, Kazuhiro Kondo, Takumi Ishii, Saki Omura, "Improvements to the Human Detection Accuracy for Tracked Automatic Sonar Warning System using OpenPose," Proc. Tohoku Region Young Researcher Workshop, R3-A-04, March 2021.

  57. Teppei Abe, Kazuhiro Kondo, Toya Kitagawa, "On Optimum Navigation Sign Signal for the Visually Handicapped," Proc. Tohoku Region Young Researcher Workshop, R3-A-05, March 2021.

  58. Tsubasa Maruyama, Kazuhiro Kondo, "On the Effect of Humidity, Temperature and Wind Velocity During Snowfall on Speech Intelligibility," Proc. Tohoku Region Young Researcher Workshop, R3-A-06, March 2021.

  59. Kazuya Tanaka, Kazuhiro Kondo, "On Speech Jamming Method Using Ultrasonic Sound Signal Output From Parametric Speakers," Proc. Tohoku Region Young Researcher Workshop, R3-A-07, March 2021.

  60. Kaito Echizenya, Kazuhiro Kondo, "Motion Direction Estimation for Indoor Position Estimation System Using BLE and Deep Learning," Proc. Tohoku Region Young Researcher Workshop, R3-E-42, March 2021.

  61. Kaito Echizenya, Kazuhiro Kondo, "A Real-Time Indoor Position Estimation Method Using DNN on BLE Signal Strength," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, K01, Aug. 2020 (in Japanese).

  62. Toya Kitagawa, Kazuhiro Kondo, "Application of DNN for Speech Estimation Capable of Handling Automobile Noise for Audio AR Navigation Systems," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, L01, Aug. 2020 (in Japanese).

  63. Kohta Muroi, Kazuhiro Kondo, "On a speech tampering detection method using audio watermarks - effects of reference speech estimation method on the BER," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, L02, Aug. 2020 (in Japanese).

  64. Tsuyoshi Miyagawa, Kazuhiro Kondo, "A Variable Audio Spot Using Flexible Parametric Speakers," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, L04, Aug. 2020 (in Japanese).

  65. Kazushi Nakazawa, Kazuhiro Kondo, "On Non-reference Speech Intelligibility Estimation for Reverberant Speech Using Estimated Clean Speech," Proc. Acoustial Society of Japan Autumn Meeting, 3-UI-4, Sept. 2020 (in Japanese).

  66. Tsuyoshi Miyagawa, Kazuhiro Kondo, "Towards a Variable Audio Spot Using Flexible Paramtric Speakers," Proc. Acoustical Society of Japan Autumn Meeting, 3-U4-27, Sept. 2020 (in Japanese).

  67. Kazushi Nakazawa, Kazuhiro Kondo, "Some observations on the effect of speaker individuality on reverberant speech intelligibility," Proc. Tohoku Region Acoustics Forum, 3-15, Nov.. 2020 (in Japanese).

  68. Tsubasa Maruyama, Shuto Shibata, Kazuhiro Kondo, "Effect of snowfall on speech intelligibility and its compensation," Proc. Tohoku Region Acoustics Forum, 3-14, Nov.. 2020 (in Japanese).

  69. Kohta Muroi, Kazuhiro Kondo, "Blind detection of audio watermarks using MMSE-STSA and its application to tampering detection," Proc. Tohoku Region Acoustics Forum, 3-10, Nov.. 2020 (in Japanese).

  70. Kohta Muroi, Kazuhiro Kondo, "Blind detection of watermarks embedded in speech using DNN-estimated reference signal," Proc. Tohoku Region Young Researcher Workshop, R2-A-13, Feb. 2020 (in Japanese).

  71. Kaito Echizennya, Kazuhiro Kondo, "Estimation of indoor position and motion direction of smart phone users using deep learning applied to BLE beacon RSSI," Proc. Tohoku Region Young Researcher Workshop, R2-C-01, Feb. 2020 (in Japanese).

  72. Tsuyoshi Miyagawa, Kazuhiro Kondo, "A variable-size audio spot using flexible super-directive speakers," Proc. Tohoku Region Young Researcher Workshop, R2-P-06, Feb. 2020 (in Japanese).

  73. Takumi Ishii, Kazuhiro Kondo, "An automatic tracking audio warning system using audio spotlight," Proc. Tohoku Region Young Researcher Workshop, R2-P-07, Feb. 2020 (in Japanese).

  74. Tasuku Sato, Kazuhiro Kondo, "A navigation system using digital signages and BLE beacons," Proc. Tohoku Region Young Researcher Workshop, R2-P-37, Feb. 2020 (in Japanese).

  75. Shuto Shibata, Kazuhiro Kondo, "On the effect of various snow variables on speech intelligibility - analysis by phonetic feature - ," Proc. Acoustical Society of Japan Spring Meeting, 1-P-33, March 2020 (in Japanese).

  76. Kazushi Nakazawa, Kazuhiro Kondo, "Speech intelligibility measurement for intelligibility estimation of reverberant speech using DNN," Proc. Acoustical Society of Japan Spring Meeting, 1-Q-34, March 2020 (in Japanese).

  77. Yosuke Kobayashi, Kazuhiro Kondo, "Proposal of an objective speech intelligibility index using a reference signal estimation model," Proc. Acoustical Society of Japan Spring Meeting, 1-Q-36, March 2020 (in Japanese).

  78. Hiroto Takahashi, Kazuhiro Kondo, "A non-reference word-speech intelligibility estimation method for additive noises - evaluation of accuracy for unseen words -," Proc. Acoustical Society of Japan Spring Meeting, 1-Q-38, March 2020 (in Japanese).

  79. Kazushi Nakazawa, Kazuhiro Kondo, "Evaluation of reverberant speech intelligibility," Proc. Tohoku Region Acoustics Forum, 2-13, Nov. 2019 (in Japanese).

  80. Shuto Shibata, Kazuhiro Kondo, "Influence of Snow on Speech Intelligibility and its Compensation Filter", Tech. Report of the IEICE/ASJ, EA2019-48, pp. 77-82 , Oct. 2019 (in Japanese).

  81. Kazuhiro Kondo, Shinichiro Osanai, "Audio spotlight using sibdivided subband delivery from multiple parametric speakers", Tech. Report of the IEICE/ASJ, EA2019-45, pp. 59-65 , Oct. 2019 (in Japanese).

  82. Hiroyuki Aida, Kazuhiro Kondo, "Pinpoint active noise control using audio spotlights," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 2A04, Aug. 2019 (in Japanese).

  83. Shuto Shibata, Kazuhiro Kondo, "Analysis of the effect of various snow characteristics on speech intelligibility using multivariate analysis," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 2A08, Aug. 2019 (in Japanese).

  84. Hiroto Takahashi, Kazuhiro Kondo, "Estimation of speech intelligibility of speech with additive noise using DNN and its accuracy evaluation," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 2A09, Aug. 2019 (in Japanese).

  85. Kaito Echizenya, Kazuhiro Kondo, "Location and Motion Direction Estimation Using DNN on BLE Beacon RSSI Fingerprints," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 2I15, Aug. 2019 (in Japanese).

  86. Kazushi Nakazawa, Kazuhiro Kondo, "On de-reverberation sing CNN," Proc. Acoustical Society of Japan Spring Meeting, 2-Q-33, pp. 403-404, March 2019 (in Japanese).

  87. Shinnya Takahashi, Kazuhiro Kondo, "A speech manipulation detection method using speech fingerprinting and audio watermark in a noisy environment," Proc. Acoustical Society of Japan Spring Meeting, 2-Q-43, pp. 433-434, March 2019 (in Japanese).

  88. Hiroto Takahashi, Kazuhiro Kondo, "On non-reference speech intelligibility estimation using noise reduction," Proc. Acoustical Society of Japan Spring Meeting, 1-6-19, pp. 227-228, March 2019 (in Japanese).

  89. Toya Kitagawa, Kazuhiro Kondo, "Detailed evaluation of wind noise reduction method using deep learning in AAR navigation systems," Proc. Acoustical Society of Japan Spring Meeting, 1-6-18, pp. 225-226, March 2019 (in Japanese).

  90. Shuto Shibata, Kazuhiro Kondo, "On the comparative effect of snowfall, accumulation, and density on speech intelligibility," Proc. Acoustical Society of Japan Spring Meeting, 1-R-23, pp. 841-842, March 2019 (in Japanese).

  91. Anju Kikuchi, Kazuhiro Kondo, "A blind-detection method for speech watermarks with estimated clean signal using DNN," Proc. Tohoku Region Young Researcher Workshop, YS-17-P32, pp. 7-8, March 2019 (in Japanese).

  92. Kyosuke Ono, Kazuhiro Kondo, "On masking of out-of-spot generated speech due to side-band emission in audio spotlights," Proc. Tohoku Region Young Researcher Workshop, YS-17-P31, pp. 143-144, March 2019 (in Japanese).

  93. Akane Arakawa, Kazuhiro Kondo, "A blind-detection method for audio watermarks with estimated clean signal using DNN," Proc. Tohoku Region Young Researcher Workshop, YS-17-A6, pp. 11-12, March 2019 (in Japanese).

  94. Toya Kitagawa, Kazuhiro Kondo, "On a wind-noise reduction method for an augmented audio realitynavgation system using deep learning," Proc. Tohoku Region Young Researcher Workshop, YS-17-A5, pp. 9-10, March 2019 (in Japanese).

  95. Hiroyuki Aida, Kazuhiro Kondo, "On pinpoint active noise control using an audiospot," Proc. Tohoku Region Young Researcher Workshop, YS-17-A4, pp. 7-8, March 2019 (in Japanese).

  96. Kazuya Nakazawa, Kazuhiro Kondo, "On phase estimation method for dereverberation using DNN," Proc. Tohoku Region Acoustic Research Conference, 1-11, Nov. 2018 (in Japanese).

  97. Toya Kitagawa, Kazuhiro Kondo, "On performance improvement of the navigation system for the visually-impared using augmented reality audio," Proc. Tohoku Region Acoustic Research Conference, 1-10, Nov. 2018 (in Japanese).ASJ Tohoku best paper award.

  98. Toya Kitagawa, Kazuhiro Kondo, "An analysis of the performance of the navigation system for the visually-impared using augmented reality audio," Proc. Acoustical Society of Japan Autumn Meeting, 3-6-4, Sept. 2018 (in Japanese).

  99. Toya Kitagawa, Kazuhiro Kondo, "On a wind noise estimation using DNN for bicycle audio augmented reality systems," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 2F07, Sept. 2018.

  100. Hiroto Takahashi, Kazuhiro Kondo, "On a noise reduction method using deep learning for the estimation of the intelligibility of word speech with additive noise," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 2D08, Sept. 2018 (in Japanese).

  101. Shinnichiro Osanai, Kazuhiro Kondo, "On the causes and its reduction of out-of-region noise in audio spotlight systems," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 2D05, Sept. 2018 (in Japanese).

  102. Toya Kitagawa, Kazuhiro Kondo, "Evaluation of Route Guidance for 3D Audio Navigation System for the Visually Impaired ," Tech. Report of the IEICE/ASJ, EA2018-33, pp. 31-36, Aug. 2018 (in Japanese).

  103. Shinnichiro Osanai, Kazuhiro Kondo, "Investigation of reduction method of noise occurring outside the audiospot," Tech. Report of the IEICE/ASJ, EA2018-36, pp. 51-56 , Aug. 2018 (in Japanese).

  104. Toya Kitagawa, Kazuhiro Kondo, "Performance Enhancement of a Wind noise reduction method using DNN," Tech. Report of the IEICE/ASJ, EA2018-3, pp. 13-18, July. 2018 (in Japanese).

  105. Shuto Shibata, Kazuhiro Kondo, "On the Comparative Effect of Snowfall, Accumulation, and Density on Speech Intelligibility," Tech. Report of the IEICE/ASJ, EA2018-2, pp. 7-12, July. 2018 (in Japanese).

  106. Shinnya Takahashi, Kazuhiro Kondo, "On a speech alteration detection method using speech fingerprinting and audio watermarks," Proc. Acoustical Society of Japan Spring Meeting, 1-P-35, March 2018 (in Japanese).

  107. Toya Kitagawa, Kazuhiro Kondo, "Introduction of DNN to wind-noise reduction methods for augmented audio reality navigation systems for bicycles," Proc. Acoustical Society of Japan Spring Meeting, 2-P-9, March 2018 (in Japanese).

  108. Ken Matsuda, Kazuhiro Kondo, "The effect of environmental noise on the navigation accuracy using 3-D audio," Proc. Acoustical Society of Japan Spring Meeting, 2-P-35, March 2018 (in Japanese).

  109. Shinnichiro Osanai, Kazuhiro Kondo, "On frequency components in side-bands of localized sound field using directive speakers," Proc. Acoustical Society of Japan Spring Meeting, 3-4-10, March 2018 (in Japanese).

  110. Kazushi Nakazawa, Kazuhiro Kondo, "On a reverberation reduction method using deep learning, "Proc. Tohoku Region Young Researcher Workshop, YS30-1-3-1, pp. 17-18, Feb. 2018 (in Japanese).

  111. Erika Yamazaki, Makoto Ohba, Hiroki Sakurai, Kazuhiro Kondo, "Evaluation of a pinpoint masking system using an audio spotlight, "Proc. Tohoku Region Young Researcher Workshop, YS30-1-3-3, pp. 21-22, Feb. 2018 (in Japanese).

  112. Toya Kitagawa, Kazuhiro Kondo, "An evaluation of the wind noise rediction method using DNN for bicycle navigation systems, "Proc. Tohoku Region Young Researcher Workshop, YS30-1-4-3, pp. 29-30, Feb. 2018 (in Japanese).Best paper award.

  113. Kazuma Suzuki, Kazuhiro Kondo, "Improvement to the accuracy of indoor location and direction estmiation using BLE signal intensity, "Proc. Tohoku Region Young Researcher Workshop, YS30-3-4-1, pp. 85-86, Feb. 2018 (in Japanese).

  114. Takumu Ohtake, Shinnichi Sato, Kazuhiro Kondo, "A distance-aware warning system for the visually-impared, "Proc. Tohoku Region Young Researcher Workshop, YS30-P-1-14, pp. 117-118, Feb. 2018 (in Japanese).Best paper award.

  115. Hiroto Takahashi, Kazuhiro Kondo, "On noise reduction method using deep learning for the estimation of speech intelligibility, "Proc. Tohoku Region Young Researcher Workshop, YS30-P-2-22, pp. 205-206, Feb. 2018 (in Japanese).

  116. Shuuto Shibata, Kazuhiro Kondo, "The effect of snowfall, accumlation and density on the speech intelligibility, "Proc. Tohoku Region Young Researcher Workshop, YS30-P-2-25, pp. 211-212, Feb. 2018 (in Japanese).ASJ Tohoku best paper award.

  117. Toya Kitagawa, Kazuhiro Kondo, "Towards a Wind noise reduction method using DNN," Tech. Rep. of the IEICE, EMM-67, pp. 7-12, Jan. 2018 (in Japanese).

  118. Toya Kitagawa, Kazuhiro Kondo, "On a wind noise countermeasure for bicycle Augmented Reality Audio systems," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 2B15, Aug. 2017.

  119. Kazuma Suzuki, Kazuhiro Kondo, "An indoor position estimation system using Bluetooth RSSI and its derivatives," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 2F03, Aug. 2017 (in Japanese).

  120. Ken Matsuda, Kazuhiro Kondo, "The effect of sound pressure and method on path navigation using 3D audio," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 2G11, Aug. 2017 (in Japanese).

  121. Toya Kitagawa, Kazuhiro Kondo, "On a wind noise countermeasure for bicycle Augmented Reality Audio systems," Tech. Rep. of the IEICE, EA2017-29, pp. 13-20, Aug. 2017 (in Japanese).

  122. Shinnya Takahashi, Kazuhiro Kondo, "A speech manipulation detection method using speech fingerprinting and watermark," Tech. Rep. of the IEICE, EMM2017-10/IT2017-10, pp. 55-59, May 2017 (in Japanese).

  123. Tohya Kitagawa, Kazuhiro Kondo, "A wind noise countermeasure for bicycle Augmented Reality Audio," Tech. Rep. of the IEICE, EMM2017-9/IT2017-9, pp. 49-54, May 2017 (in Japanese).

  124. Keisuke Matsuura, Kazuhiro Kondo, "A study on acoustic pipe structure for ANC mute microphones," Proc. Acoustical Society of Japan Spring Meeting, 1-P-2, pp. 515-516, March 2017 (in Japanese).

  125. Yosuke Kobayashi, Kazuhiro Kondo, Shuichi Sakamoto, "Speech intelligibility estimation from limited samples for actual environment evaluation," Proc. Acoustical Society of Japan Spring Meeting, 1-P-28, pp. 583-586, March 2017 (in Japanese).

  126. Ken Matsuda, Kazuhiro Kondo, "Comparison of sound localization ability for 3D sign sounds under environmental noise," Proc. Acoustical Society of Japan Spring Meeting, 2-Q-1, pp. 639-640, March 2017 (in Japanese).

  127. Kazuya Taira, Kazuhiro Kondo, "Optimization of binaural speech intelligibility estimation method using random forest," Proc. Acoustical Society of Japan Spring Meeting, 3-Q-45, pp. 1527-1528, March 2017 (in Japanese).

  128. Chiaki Takahashi, Kazuhiro Kondo, "An indoor position detection system using Bluetooth LE and its application to augmented reality audio systems," Proc. Tohoku Region Young Researcher Workshop, YS29-1-1-4, pp. 7-8, March 2017 (in Japanese).

  129. Tohya Kitagawa, Kazuhiro Kondo, "A wind noise reduction system for environmental audio feedback in augmented reality audio for bicycles," Proc. Tohoku Region Young Researcher Workshop, YS29-2-2-6, pp. 59-60, March 2017 (in Japanese). Best paper award.

  130. Saki Ohmura, Kazuhiro Kondo, "A superdirective audio warning system using Kinect sensors and parametric speakers," Proc. Tohoku Region Young Researcher Workshop, YS29-2-3-1, pp. 61-62, March 2017 (in Japanese).

  131. Kazuma Suzuki, Kazuhiro Kondo, "An indoor positioning detection system using Bluetooth radio intensity and its derivatives," Proc. Tohoku Region Young Researcher Workshop, YS29-P-1-14, pp. 135-136, March 2017 (in Japanese). Best paper award.

  132. Yusuke Enomoto, Kazuhiro Kondo, "The influence of snow accumulation and snowfall on the intelligibility of broadcast speech from wireless disaster warning systems," Proc. Tohoku Region Young Researcher Workshop, YS29-P-3-12, pp. 217-218, March 2017 (in Japanese).

  133. Shinnya Takahashi, Kazuhiro Kondo, "The detection of watermarks for audio signals using line spectral pairs," Proc. Tohoku Region Young Researcher Workshop, YS29-P-3-13, pp. 219-220, March 2017 (in Japanese). Best paper award.

  134. Kazuhiro Kondo, Joji Yamada, "On a Frame Synchronization Method for Audio Watermarks Robust Against Aerial Transmission," Tech. Rep. of the IEICE, EMM2016-76, pp. 13-18, Jan. 2017.

  135. Yosuke Kobayashi, Kazuhiro Kondo, "Quality estimation of speech masking system using subjective and objective evaluation scores," Tech. Rep. of the IEICE, EA2016-59/EMM2016-65, pp. 67-72, Nov. 2016.

  136. Yosuke Kobayashi, Kazuhiro Kondo, Shuichi Sakamoto "Detailed analysis of Japanese intelligibility estimate method from few speech samples," Proc. Acoustical Society of Japan Fall Meeting, 2-P-30, pp. 627- 630, Sept. 2016 (in Japanese).

  137. Ken Matsuda, Kazuhiro Kondo, "Towards a Navigation System for the Visually Impaired Using 3D Audio," Proc. Acoustical Society of Japan Fall Meeting, 2-P-45, pp. 667- 338, Sept. 2016 (in Japanese).

  138. Keisuke Matsuura, Kazuhiro Kondo, "On a frequency-weighted ANC algorithm for singing voice attenuation." Proc. Acoustical Society of Japan Fall Meeting, 1-P-27, pp. 489-490 , Sept. 2016 (in Japanese).

  139. Kazuya Taira, Kazuhiro Kondo, "Improvements to the machine learning method for binaural speech intelligibility estimation," Proc. Acoustical Society of Japan Fall Meeting, 2-P-25, pp. 613 - 614, Sept. 2016 (in Japanese).

  140. Chiaki Takahashi, Kazuhiro Kondo, "An indoor positioning system using iBeacons," Proc. Tohoku Section Joint Convention of Institutes of Electrical and Information Engineers, 1F11, Aug. 2016 (in Japanese).

  141. Kazuya Taira, Kazuhiro Kondo, "Improvement to an Objective Binaural Intelligibility Prediction Method ," Tech. Rep. of the IEICE, EA2016-21, pp. 7-12, Aug. 2016.

  142. Kazuhiro Kondo, "Estimation of forced-selection speech intelligibility by comparing objective measures between candidate words," Tech. Rep. of the IEICE, EA2016-20, pp. 1-6, Aug. 2016.

  143. Kazuhiro Kondo, "On estimation of forced-selection speech intelligibility by comparing frequency-weighted SNR between candidate words," Proc. Acoustical Society of Japan Spring Meeting, 1-6-8, pp. 453 - 456, March 2016 (in Japanese).

  144. Keisuke Matsuura, Takashi Chida, Daiki Suzuki, Kazuhiro Kondo, "A microphone that mutes singing voice using ANC," Proc. Acoustical Society of Japan Spring Meeting, 1-P-32, pp. 737- 738, March 2016 (in Japanese).

  145. Makoto Ohba, Kazuhiro Kondo, "Performance evaluation of a masking system using a human head tracking parametric speaker," Proc. Acoustical Society of Japan Spring Meeting, 2-P-25, pp. 831-832 , March 2016 (in Japanese).

  146. Joji Yamada, Kazuhiro Kondo, "A synchronization scheme for audio watermarks with embedded random synchronization pattern," Proc. Acoustical Society of Japan Spring Meeting, 1-P-37, pp. 747-748, March 2016 (in Japanese).

  147. Kazuya Taira, Kazuhiro Kondo, "On a band-selection feature extraction method for binaural speech intelligibility estimation," Proc. Acoustical Society of Japan Spring Meeting, 2-Q-26, pp. 523-524 , March 2016 (in Japanese).

  148. Toshiki Miyakawa, Kazuhiro Kondo, "Improved tampering detection method for audio signals," Proc. Tohoku Region Young Researcher Workshop, YS-14-A9, pp. 17-18, March 2016 (in Japanese).

  149. Ken Matsuda, Kazuhiro Kondo, "A navigation system for the visually handicapped using 3-D audio," Proc. Tohoku Region Young Researcher Workshop, YS-14-A10, pp. 19-20, March 2016 (in Japanese).

  150. Takashi Chida, Kazuhiro Kondo, "On a duct structure that can decrease the karaoke singing voice volume efficiently," Proc. Tohoku Region Young Researcher Workshop, YS-13-P1, pp. 181-182, March 2016 (in Japanese).

  151. Toshiharu Yoshizawa, Kazuhiro Kondo, Shun Kashiwase, "Improved listener tracking sound production system using super-directional parametric speakers," Proc. Tohoku Region Young Researcher Workshop, YS-13-P3, pp. 185-186, March 2016 (in Japanese).

  152. Chiaki Takahashi, Kazuhiro Kondo, "On a indoor positioning system using iBeacons," Proc. Tohoku Region Young Researcher Workshop, YS-13-P21, pp. 221-222, March 2016 (in Japanese). Best paper award.

  153. Yosuke Kobayashi, Kazuhiro Kondo, "Intelligibility prediction method for outdoor public address systems using classifiers," Technical Report of the IEICE, EA2015-26, pp.13-18, Nov. 2015 (in Japanese).

  154. Keisuke  Matsuura, Daiki Suzuki, Kazuhiro Kondo, "The Singing Voice Mute Microphone using ANC," Proc. Acoustical Society of Japan Fall Meeting, 1-P-3, pp. 603 - 604, Sept. 2015 (in Japanese).

  155. Chiaki Takahashi, Kazuhiro Kondo, "Indoor Positioning Method Using iBeacons and its Application to Indoor Augmented Audio Reality Navigating Systems," Proc. Acoustical Society of Japan Fall Meeting, 1-P-4, pp. 605 - 606, Sept. 2015 (in Japanese).

  156. Joji Yamada, Kazuhiro Kondo, "Comparison of synchronization scheme of Audio Watermarks," Proc. Acoustical Society of Japan Fall Meeting, 2-P-22, pp. 729 - 730, Sept. 2015 (in Japanese).

  157. Kazuya Taira, Kazuhiro Kondo, "On an binaural speech intelligibility estimation using the better ear model," Proc. Acoustical Society of Japan Fall Meeting, 2-P-44, pp. 495 - 496, Sept. 2015 (in Japanese).

  158. Makoto Oba, Kazuhiro Kondo, "Examination of the performance evaluation method of a system using human head tracking parametric speaker system and its application to a masking system," Proc. Acoustical Society of Japan Fall Meeting, 2-P-21, pp. 727 - 728, Sept. 2015 (in Japanese).

  159. Yosuke Kobayashi, Kazuhiro Kondo, "Quality Assessment of Bootstrap Masker for Speech Masking Systems," Technical Report of the IEICE, EA2015-22, pp.77-82, Aug. 2015 (in Japanese).

  160. Kazuya Taira, Kazuhiro Kondo, "On an Objective Prediction Method of Binaural Speech Intelligibility," Technical Report of the IEICE, EA2015-22, pp.71-76, Aug. 2015 (in Japanese).

  161. Kazuhiro Kondo, "An Estimation Method for Two-to-One Forced Selection Intelligibility using the Articulation Index Band Correlation," Technical Report of the IEICE, EA2015-21, pp.65-70, Aug. 2015 (in Japanese).

  162. Kazuhiro Kondo, "Towards estimation of two-to-one forced selection intelligibility estimation using the AI band correlation," Proc. Acoustical Society of Japan Spring Meeting, 1-3-11, pp. 441 - 444, March 2015 (in Japanese).

  163. Daiki Suzuki, Kazuhiro Kondo, "Reduction of Singing Voice Levels by Active Noise Control," Proc. Acoustical Society of Japan Spring Meeting, 1-Q-3, pp. 681 - 682, March 2015 (in Japanese).

  164. Joji Yamada, Kazuhiro Kondo, "Synchronous Position Estimation of Audio Watermarks," Proc. Acoustical Society of Japan Spring Meeting, 1-Q-31, pp. 751 - 752, March 2015 (in Japanese).

  165. Shun Kashiwase, Kazuhiro Kondo, "A human tracking highly-directive speaker system," Proc. Acoustical Society of Japan Spring Meeting, 1-Q-49, pp. 799 - 800, March 2015 (in Japanese).

  166. Makoto Oba, Kazuhiro Kondo, "Improvements to the human head tracking masking system using super-directional speakers," Proc. Acoustical Society of Japan Spring Meeting, 2-P-27, pp. 5849 - 850, March 2015 (in Japanese).

  167. Yosuke Kobayashi, Kaede Nishida, Kazuhiro Kondo, "Blind intelligibility prediction method for outdoor public address system under speech transmission quality degradation condition," Proc. Acoustical Society of Japan Spring Meeting, 2-Q-27, pp. 539 - 542, March 2015 (in Japanese).

  168. Kaede Nishida, Yosuke Kobayashi, Kazuhiro Kondo, "Intelligibility evaluation for outdoor public address system under speech transmission quality degradation conditions," Proc. Acoustical Society of Japan Spring Meeting, 2-Q-28, pp. 543 - 544, March 2015 (in Japanese).

  169. Yuuta Takahashi, Kazuhiro Kondo, "Musical Instrument Classification using Randomforest and NMF," Proc. Acoustical Society of Japan Spring Meeting, 3-5-4, pp. 935 - 936, March 2015 (in Japanese).

  170. Takeshi Kondo, Kazuhiro Kondo, "Detection and position estimation of audio signal tampering using watermarks," Proc. Tohoku Region Young Researcher Workshop, YS-13-C2, pp. 61-62, Feb. 2015 (in Japanese)

  171. Kazuya Taira, Kazuhiro Kondo, "Towards estimation of binaural speech intelligibility using objective measures," Proc. Tohoku Region Young Researcher Workshop, YS-13-C3, pp. 63-64, Feb. 2015 (in Japanese)

  172. Chiaki Takahashi, Kazuhiro Kondo, "Detection and position estimation of audio signal tampering using watermarks," Proc. Tohoku Region Young Researcher Workshop, YS-13-P64, pp. 305 - 306, Feb. 2015 (in Japanese)

  173. Yuuta Goto, Kazuhiro Kondo, "On improvement to user tracking performance in human tracking super-directional parametric speaker system," Proc. Tohoku Region Young Researcher Workshop, YS-13-P65, pp. 307 - 308, Feb. 2015 (in Japanese)

  174. Keisuke Matsuura, Kazuhiro Kondo, "Investigation of acoustic pipe structure applicable to active Karaoke speech cancellation," Proc. Tohoku Region Young Researcher Workshop, YS-13-P66, pp. 309 - 310, Feb. 2015 (in Japanese). Best paper award.

  175. Yuta Takahashi, Kazuhiro Kondo, "Musical Instrument Identification Using Random Forests on Musical Instrument Sound Generation Features," Proc. Acoustical Society of Japan Autumn Meeting, 1-Q-16, Sept. 2014 (in Japanese).

  176. Daiki Suzuki, Kazuhiro Kondo, "Evaluation of Singing Voice Reduction Using a Real-Time Active Noise Control System," Proc. Acoustical Society of Japan Autumn Meeting, 2-P-38, Sept. 2014 (in Japanese).

  177. Shun Kashiwase, Kazuhiro Kondo, "A Highly-Directive Human Tracking Speaker System," Proc. Acoustical Society of Japan Autumn Meeting, 2-P-41, Sept. 2014 (in Japanese).

  178. Yosuke Kobayashi, Kazuhiro Kondo, "Bootstrap Masker Generation Method for Speech Masking Systems," Proc. Acoustical Society of Japan Autumn Meeting, 2-P-42, Sept. 2014 (in Japanese).

  179. Makoto Ohba, Kazuhiro Kondo, "A Pedestrian-Tracking Masking System Using Super-Directional Speakers," Proc. Tohoku Section Joint Conv. of Institutes of Electrical and Information Engineers, 2E05, (Aug. 2014)(in Japanese)

  180. Joji Yamda, Kazuhiro Kondo, "On a Frame Synchronization Method for Audio Watermarks," Proc. Tohoku Section Joint Conv. of Institutes of Electrical and Information Engineers, 2E05, (Aug. 2014)(in Japanese)

  181. K. Kondo, T. Sakano, Y. Kobayashi, "On a Single-Ended Estimation of Speech Intelligibility Using the ITU-T P.563 Feature Set," Technical Report of the IEICE, EA2014-14, pp.13-18, Aug. 2014 (in Japanese).

  182. Y. Kobayashi, N. Takahashi, K. Kondo, "Towards Sentence Intelligibility Tests under Long-Path Echoes and its Estimation Method without Transmission Characteristics," Technical Report of the IEICE, EA2014-13, pp. 7-12, Aug. 2014 (in Japanese).

  183. Y. Takahashi, K. Kondo, "Musical Instrument Classification Using Random Forests," Proc. Acoustical Society of Japan Spring Meeting, 1-P5-2, March 2014 (in Japanese).

  184. D. Suzuki, K. Kondo, "A Study on Active Noise Control of Singing Voice," Proc. Acoustical Society of Japan Spring Meeting, 1-P5-10, March 2014 (in Japanese).

  185. Y. Kobayashi, N. Takahashi, K. Kondo, "Towards Sentence Intelligibility Tests under Long-Path Echoes and its Estimation Method without Transmission Characteristics," Proc. Acoustical Society of Japan Spring Meeting, 2-P5-14, March 2014 (in Japanese).

  186. S. Kashiwase, K. Kondo, "A Highly-Directive Human Tracking Speaker System," Proc. Acoustical Society of Japan Spring Meeting, 2-P5-17, March 2014 (in Japanese).

  187. T. Sakano, Y. Kobayashi, K. Kondo, "A Study on Non-Reference Features for Speech Intelligibility Estimation of Unknown Speech Samples," Proc. Acoustical Society of Japan Spring Meeting, 2-P5-25, March 2014 (in Japanese).

  188. H. Sakurai, K. Kondo, "Evaluation of Maskers Created from Multiple Same-Gender Speaker Speech," Proc. Tohoku Region Young Researcher Workshop, YS-12-A5, Feb. 2014 (in Japanese).

  189. J. Yamada, K. Kondo, "Random Sequence for Synchronization for Audio Watermarks," Proc. Tohoku Region Young Researcher Workshop, YS-12-A6, Feb. 2014 (in Japanese).

  190. N. Takahashi, Y. Kobayashi, K. Kondo, "On an Intelligibility Evaluation Method for Speech with Long Path Echos Using Read Sentences," Proc. Tohoku Region Young Researcher Workshop, YS-12-A7, Feb. 2014 (in Japanese). Best paper award.

  191. S. Tezuka, K. Kondo, "On the effect of Wind Noise Reduction Filters on the Sound Localization Accuracy in Augmented Audio Reality Systems for Cyclists," Proc. Tohoku Region Young Researcher Workshop, YS-12-P3, Feb. 2014 (in Japanese).

  192. M. Ohba, K. Kondo, "Towards a Pedestrian Tracking Masking System using Super-Directive Speakers," Proc. Tohoku Region Young Researcher Workshop, YS-12-P4, Feb. 2014 (in Japanese). ITEJ Tohoku Chapter Chair Award.

  193. M. Miura, K. Kondo "Wind noise reduction in portable Audio Augmented Reality systems for pedestrians and cyclists," Technical Report of the IEICE, EA2013-81, EMM2013-81, pp., Nov. 2013 (in Japanese).

  194. Y. Kobayashi, N. Anazawa, K. Kondo "Speech intelligibility comparison of two audio output devices for augmented audio reality," Technical Report of the IEICE, EA2013-80, EMM2013-80, pp., Nov. 2013 (in Japanese).

  195. T. Sakano, Y. Kobayashi, K. Kondo, "Speech intelligibility estimation using Sound evaluation measures, that does not require clean source," Proc. Acoustical Society of Japan Autumn Meeting, 2-P-50, Sept. 2013 (in Japanese).

  196. Y. Kobayashi, K. Kondo, "Reappraisal of the ambient noise clustering method for speech intelligibility tests," Proc. Acoustical Society of Japan Autumn Meeting, 2-P-49, Sept. 2013 (in Japanese).

  197. S. Kashiwase, K. Kondo, "A highly-directive human tracking speaker system," Proc. Acoustical Society of Japan Autumn Meeting, 2-P-42, Sept. 2013 (in Japanese).

  198. D. Suzuki, K. Kondo, "Active noise control for singing voice attenuation," Proc. Tohoku Section Joint Conv. of Institutes of Electrical and Information Engineers, 2C13, (Aug. 2013)(in Japanese)

  199. Y. Kobahashi, N. Anazawa, K. Kondo, "Speech Intelligibility Comparison of Audio Display for Augmented Audio Reality," Proc. Tohoku Section Joint Conv. of Institutes of Electrical and Information Engineers, 2C05, (Aug. 2013)(in Japanese)

  200. T. Sakano, Y. Kobahashi, K. Kondo, "Speech intelligibility estimation using SVR on features not requiring clean sources," Proc. Tohoku Section Joint Conv. of Institutes of Electrical and Information Engineers, 2A03, (Aug. 2013)

  201. M. Miura, K. Kawai, K. Kondo, "Speech intelligibility improvement by speech morphing for speech under wind noise in AAR systems for pedestrians and bicyclists," Proc. Tohoku Section Joint Conv. of Institutes of Electrical and Information Engineers, 2A02, (Aug. 2013)

  202. T. Komiyama, K. Kondo, "Psychological evaluation and speech intelligibility of speaker-dependent babble noise," Proc. Acoustical Society of Japan Spring Convention, 2-Q-48, March 2013 (in Japanese).

  203. K. Kondo, "On Estimation of Watermarked Audio Quality Using Objective Quality Measures," Proc. Acoustical Society of Japan Spring Convention, 2-Q-44, March 2013 (in Japanese).

  204. A. Nishimura, A. Ogihara, M. Unoki, K. Kondo, "A review on the results of the first contest for audio watermarking and its further investigation," Proc. Acoustical Society of Japan Spring Convention, 2-Q-42, March 2013 (in Japanese).

  205. N. Anazawa, K. Kondo, "Comparison of sound output devices for augmented audio reality," Proc. Acoustical Society of Japan Spring Convention, 2-Q-37, March 2013 (in Japanese).

  206. T. Sakano, Y. Kobayashi, K. Kondo, "Speech intelligibility estimation that does not require clean source," Proc. Acoustical Society of Japan Spring Convention, 2-Q-20, March 2013 (in Japanese).

  207. Y. Kobayashi, K. Kondo, "Detailed performance evaluation of the ambient noise clustering method for speech intelligibility tests," Proc. Acoustical Society of Japan Spring Convention, 2-Q-19, March 2013 (in Japanese).Best presentation award

  208. Y. Abe and K.; Kondo, "On the Influence of Adaptive Speech Source Localization Using Head Tracking on Localized Speech Intelligibility," Proc. Tohoku Region Young Researcher Workshop, YS-11-A11 (March, 2013) (in Japanese)

  209. D. Suzuki and K.; Kondo, "A Prototype Virtual Concert System Using Augmented Reality and its Evaluation," Proc. Tohoku Region Young Researcher Workshop, YS-11-A12 (March, 2013) (in Japanese)

  210. H. Takiguchi and K.; Kondo, "Speech Intelligibility Evaluation of Weather Forecast Audio Using Adaptive Speech Rate Control," Proc. Tohoku Region Young Researcher Workshop, YS-11-A14 (March, 2013) (in Japanese)

  211. K. Kawai, M. Miura and K.; Kondo, "On Improvement to Speech Intelligibility of Augmented Audio Reality System for Bicycles using Bone-Conduction Headphones," Proc. Tohoku Region Young Researcher Workshop, YS-11-A11 (March, 2013) (in Japanese)

  212. S. Kashiwada, T. Komiyama and K.; Kondo, "Evaluation of Masking Efficiency of Gender-Dependent Babble Maskers," Proc. Tohoku Region Young Researcher Workshop, YS-11-A15 (March, 2013) (in Japanese)

  213. R. Yamaguchi and K.; Kondo, "Speech Intelligibility Estimation Using the Objective Measure PEMO-Q," Proc. Tohoku Region Young Researcher Workshop, YS-11-A16 (March, 2013) (in Japanese) Best paper award.

  214. S. Kashiwase and K.; Kondo, "Head-Tracking Parametric Speaker Using Kinect," Proc. Tohoku Region Young Researcher Workshop, YS-11-P3 (March, 2013) (in Japanese) Best paper award.

  215. Y. Takahashi and K.; Kondo, "Musical Instrument Identification from Simultaneous Mixed Instrument Pieces," Proc. Tohoku Region Young Researcher Workshop, YS-11-P4 (March, 2013) (in Japanese)

  216. A. Nishimura, A. Ogihara, M. Unoki, K. Kondo, “On the Use of Objective Measures to Estimate Watermarked Audio Quality,” Technical Report of the IEICE, vol. 112, no. 293, EA2012-95/EMM2012-77, pp. 81-86, Nov. 2012 (in Japanese).

  217. K. Kondo, “On the Use of Objective Measures to Estimate Watermarked Audio Quality,” Technical Report of the IEICE, vol. 112, no. 293, EA2012-93/EMM2012-75, pp. 69-74, Nov. 2012 (in Japanese).

  218. Y. Kobayashi, K. Kondo, "An ambient noise clustering method for speech intelligibility estimation," Proc. Acoustical Society of Japan Autumn Convention, 2-Q-a1, Sept. 2012 (in Japanese).

  219. Y. Kobayashi, K. Kondo, "Speech intelligibility estimation using support vector regression and critical band SNR.," Proc. Acoustical Society of Japan Autumn Convention, 2-Q-a2, Sept. 2012 (in Japanese).

  220. Y. Yamguchi, T.Koga, K. Kondo, "A Watermarking Method for Embedding Short Information Split into Audio and Video Signals," Proc. Tohoku Section Joint Conv. of Institutes of Electrical and Information Engineers, 1A04, (Aug. 2012) (in Japanese)

  221. M. Miura, H. Watanabe, K. Kondo, "Evaluation of the portable AAR environmental sound source accuracy," Proc. Tohoku Section Joint Conv. of Institutes of Electrical and Information Engineers, 1A06, (Aug. 2012) (in Japanese)

  222. T. Sakano, Y. Kobayashi, K. Kondo, "Japanese speech intelligibility estimation using neural networks with single-sided speech features," Proc. Tohoku Section Joint Conv. of Institutes of Electrical and Information Engineers, 2G13, (Aug. 2012) (in Japanese)

  223. Y. Kobayashi, K. Kondo, "Further study on estimation of binaural speech intelligibility using the Support Vector Regression," Proc. Acoustical Society of Japan Spring Convention, 3-Q-5, Mar. 2012 (in Japanese).

  224. A. Nishimura, A. Ogihara, M. Unoki, K. Kondo, K. Sonoda, K. Iwamura, R. Tachibana, "Criteria for evaluation on audio information hiding," Proc. Acoustical Society of Japan Spring Convention, 3-1-24, Mar. 2012 (in Japanese).

  225. A. Nishimura, A. Ogihara, M. Unoki, K. Kondo, K. Sonoda, K. Iwamura, R. Tachibana, "Evaluation criteria for audio watermarking technology and its evaluation campaign," Proc. IEICE National Convention, Mar. 2012 (in Japanese).

  226. R. Katagiri and K.; Kondo, "A Reversible Audio Watermark Using Linear Prediction and Vector Quantization," Proc. Tohoku Region Young Researcher Workshop, YS-10-A12 (March, 2012) (in Japanese)

  227. Y. Abe and K.; Kondo, "Evaluation of Head Tracking on 3D Audio Conference System," Proc. Tohoku Region Young Researcher Workshop, YS-10-A13 (March, 2012) (in Japanese)

  228. T. Sakano and K.; Kondo, "Japanese Speech Intelligibility Estimation Using Objective Speech Quality Measures," Proc. Tohoku Region Young Researcher Workshop, YS-10-A14 (March, 2012) (in Japanese)

  229. H. Watanabe, T. Shibuya, Y. Kobayashi and K.; Kondo, "Influence of Speech Length Expansion/Contraction by Word-Initial Phonetic Feature," Proc. Tohoku Region Young Researcher Workshop, YS-10-A15 (March, 2012) (in Japanese) Best paper award.

  230. H. Watanabe, M. Miura and K.; Kondo, "On Wind Noise Reduction in Augmented Audio Reality System for Bicycles," Proc. Tohoku Region Young Researcher Workshop, YS-10-A19 (March, 2012) (in Japanese)

  231. A. Nishimura, A. Ogihara, M. Unoki, K. Kondo, K. Sonoda, K. Iwamura, R. Tachibana, "Evaluation criteria for audio information hiding technologies," Proc. IEICE 29th Symposium on Cryptography and Information Security, Jan.-Feb. 2012(in Japanese).

  232. A. Nishimura, A. Ogihara, M. Unoki, K. Kondo, K. Sonoda, K. Iwamura, R. Tachibana, "A study on audio information hiding and its criteria for evaluation," Technical Report of the IEICE, EA2011-101 EMM2011-61, pp.31-36, Dec. 2011 (in Japanese).

  233. M. Miura, Y. Takano, H. Isaka, K. Kondo, "An Experimental Examination of Vibration of PZT Speaker and Acoustic Radiation Characteristics," Proc. JSME Dynamics and Design Conf. (Sept. 2011) (in Japanese).

  234. Y. Kobayashi, K. Kondo, "On Learning Conditions for the Estimation of Speech Intelligibility in Virtual Acoustic Space," Proc. Acoustical Society of Japan Autumn Meeting, 1-Q-25 (Sept. 2011) (in Japanese).

  235. Y. Kobayashi, K. Kondo, "On Objective Measures for the Estimation of Speech Intelligibility in Virtual Acoustic Space," Proc. of the 10th Forum on Information Technology (FIT), E-020, (Sept. 2011) (in Japanese).

  236. N. Anazawa, K. Kondo, "Intelligibility Comparison of Bone-Conducted Speech by Noise Presentation," Proc. Tohoku Section Joint Conv. of Institutes of Electrical and Information Engineers, 2E13, (Aug. 2011) (in Japanese)

  237. T. Komiyama, K. Kondo, "Speech Intelligibility of Speaker-Dependent Maskers in Real Space," Proc. Tohoku Section Joint Conv. of Institutes of Electrical and Information Engineers, 2E14, (Aug. 2011) (in Japanese)

  238. N. Saito, T. Kosaka and K. Kondo, “On the Influence of Head Movement on Localized Speech Intelligibility in 3D Acoustic Space,” Proc. of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-1-5, Mar. 2011 (in Japanese).

  239. Y. Kobayashi and K. Kondo, “On Distortion Measures for Speech Intelligibility Estimation in Virtual Acoustic Space,” Proc. of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-2-1, Mar. 2011 (in Japanese).

  240. Y. Yamane and K. Kondo, “Full Duplex Communication System Using ANC Headsets for MRI Operation Noise with MRI Noise and its Speech Intelligibility,” Proc. of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-2-2, Mar. 2011 (in Japanese).

  241. T. Shibuya, Y. Kobayashi and K. Kondo, “An Analysis of Speech Intelligibility of Artificially Speed-Altered Speech by Phonetic Feature,” Proc. of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-2-3, Mar. 2011 (in Japanese).

  242. N. Anazawa, K.; Kondo, H. Yagyu, and T. Kanda, "Evaluation of Speech Intelligibility in Augmented Audio Using Bone-Conduction Headphones," Proc. Tohoku Region Young Researcher Workshop, YS-9-D9 (March, 2011) (in Japanese)

  243. T. Terada, K.; Kondo, and F. Kano, "On Optimum Orientation of Parallel Directive Parametric Speakers," Proc. Tohoku Region Young Researcher Workshop, YS-9-D11 (March, 2011) (in Japanese)

  244. T. Komiyama and K.; Kondo, "Speech Privacy Protection Using Maskers Created From the Speaker's Utterance ," Proc. Tohoku Region Young Researcher Workshop, YS-9-D10 (March, 2011) (in Japanese)

  245. Y. Kobayashi and K.; Kondo, "Estimation method of virtual 3D audio speech intelligibility," Proc. Acoustical Society of Japan Autumn Meeting, 3-Q-1, Sept. 2010 (in Japanese).

  246. K.; Kondo, "Evaluation of a Data Hiding Method for Stereo Audio Signals Using Inter-Channel Decorrelator Echo Polarity," Proc. Acoustical Society of Japan Autumn Meeting, 1-10-21, Sept. 2010 (in Japanese).

  247. N. Saito, K.; Kondo, and T. Kosaka, "The Impact of Head Movement on Speech Intelligibility," Proc. Acoustical Society of Japan Autumn Meeting, 1-10-10, Sept. 2010 (in Japanese).

  248. M. Miura, S. Tanaka, K. Kondo, H. Isaka, "On car navigation speech annotation using shell-type piezo speakers," Proc. JSME Dynamics and Design Conf. (Sept. 2010) (in Japanese).

  249. T. Kanda, Y. Kobayashi, K. Kondo, and H. Yagyu, “Comparison of Spatialized Speech Intelligibility Using Air- and Bone-Conducted Headphones,” Proc. Tohoku Section Joint Conv. of Institutes of Electrical and Information Engineers, 2F06, p. 200 (Aug. 2010) (in Japanese)

  250. K. Kondo, “Characteristics of a Data Hiding Method for Stereo Audio Signals Using Inter-Channel Decorrelator Echo Polarity,” Proceedings of the 10th Technical Meeting of the Special Interest Group on Multimedia Information Hiding, pp.19-24, June 2010 (in Japanese).

  251. Y. Kobayashi, K. Kondo and K. Nakagawa, “Influence of Stereo Coding on Japanese Speech Intelligibility in 3D Audio Space,” Technical Report of the IEICE, vol. 110, no. 71, EA2010-23, pp. 7-12, June 2010 (in Japanese).

  252. N. Yano, T. Shibuya, K. Kondo and K. Nakagawa, “The Effect of Speech Delay on the Short-Term Memory in Multimedia Contents,” Proc. National Convention of the IEICE, B-11-27, Mar. 2010 (in Japanese).

  253. Y. Kobayashi, S. Inoue, K. Kondo, and K. Nakagawa, “Influence of competing noise elevation on read Japanese words intelligibility in virtual acoustic space,” Proc. Acoustical Society of Japan Spring Meeting, 3-P-24, Mar. 2010 (in Japanese).

  254. Y. Kobayashi, K. Kondo, and K. Nakagawa, “On the Influence of HE-AAC Stereo Coding on Virtual 3-D Speech Quality and Intelligibility,” Proc. of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-2-1, Mar. 2010 (in Japanese).

  255. Y. Takano, K. Kondo, and K. Nakagawa, “On Acoustic Model Adaptation for Speech Intelligibility Estimation Using Speech Recognition,” Proc. of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-2-2, Mar. 2010 (in Japanese).

  256. T. Kanda, K. Kondo, Y. Kobayashi and K. Nakagawa, “Comparison of Intelligibility of Spatialized Speech Using Air and Bone-Conduction Headphones,” Proc. of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-2-3, Mar. 2010 (in Japanese).

  257. S. Inoue, K. Kondo, Y. Kobayashi and K. Nakagawa, “On the Influence of Noise Elevation on Virtual 3-D Speech Intelligibility,” Proc. of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-2-4, Mar. 2010 (in Japanese).

  258. F. Kano, K. Kondo, M. Miura, Y. Kobayashi, K. Nakagawa and K. Takano, “Evaluation of Speech Intelligibility Using Highly-Directive Parametric Speakers in Parallel Positions,” Proc. of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-2-5, Mar. 2010 (in Japanese).

  259. Y. Takano, K. Kondo and K. Nakagawa, “On Estimation of Two-to-One Selection-Based Intelligibility Score with Speech Recognition Using Noise-Adapted Models,” Proc. Acoustical Society of Japan Fall Meeting, 3-3-11, Sept. 2009 (in Japanese).

  260. Y. Kobayashi, K. Kondo and K. Nakagawa, “Intelligibility of HE-AAC Coded Japanese Words with Various Stereo Coding Modes,” Proc. Acoustical Society of Japan Fall Meeting, 3-Q-28, Sept. 2009 (in Japanese).

  261. N. Saito, K. Kondo, K. Nakagawa and K. Takano, “The Impact of Head Movement on Speech Intelligibility in Real Space,” Proc. Acoustical Society of Japan Fall Meeting, 3-Q-29, Sept. 2009 (in Japanese).

  262. H. Yagyu, N. Yano and K. Kondo, “Spatial Sound Localization Accuracy and Characteristics of Listening Difficulty for Bone-Conducted Sound,” Proc. Acoustical Society of Japan Fall Meeting, 3-Q-30, Sept. 2009 (in Japanese).

  263. K. Kondo, “A Data Hiding Method for Stereo Audio Signals Using Polarity of the Decorrelator Echoes,” Proc. Acoustical Society of Japan Spring Meeting, 1-4-17, Mar. 2009 (in Japanese).

  264. Y. Kobayashi, K. Kondo, and K. Nakagawa, “Intelligibility of Low-Bit Rate MPEG-Coded Speech in 3-D Audio Space,” Proc. Acoustical Society of Japan Spring Meeting, 1-9-21, Mar. 2009 (in Japanese).

  265. T. Chiba, K. Kondo, and K. Nakagawa, “Influence of Competing Noise on Read Japanese Word Intelligibility in Real and Virtual Acoustic Space with Head Related Transfer Function,” Proc. Acoustical Society of Japan Spring Meeting, 1-9-23, Mar. 2009 (in Japanese).

  266. Y. Takano, K. Kondo, K. Nakagawa, and K. Takano, “On Estimation of Two-to-one Selection-Based Intelligibility Score Using Speech Recognition,” Proc. Acoustical Society of Japan Spring Meeting, 2-Q-19, Mar. 2009 (in Japanese).

  267. Y. Kobayashi, K. Kondo, and K. Nakagawa, “On the Influence of Stereo Coding in HE-AAC Codecs on Virtual 3-D Speech Signals,” Proceedings of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A-1-3, Mar. 2009 (in Japanese).

  268. Y. Akiba, K. Kondo, K. Takano, and K. Nakagawa, “An Audio Packet Loss Concealment Method Using Linear Prediction and Sign Correction,” Proceedings of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A-1-4, Mar. 2009 (in Japanese).

  269. H. Yagyu, K. Kondo, and K. Nakagawa, “Comparison of Localization Accuracy and Speech Intelligibility of Bone-Conducted and Air-Borne Speech,” Proceedings of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A-1-5, Mar. 2009 (in Japanese).

  270. Y. Takano, K. Kondo, and K. Nakagawa, “Estimation of Speech Intelligibility Using Speech Recognition Systems with Speaker-Adapted Models,” Proceedings of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A-2-1, Mar. 2009 (in Japanese).

  271. N. Saito, K. Kondo, and K. Nakagawa, “Effect of Head Movement on Speech Intelligibility on Speech with Competing Noise in Real Acoustic Space,” Proceedings of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A-2-2, Mar. 2009 (in Japanese).

  272. Y. Yamane, K. Kondo, and K. Nakagawa, “The Effect of Secondary Path Changes on Active Noise Cancellation,” Proceedings of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A-2-3, Mar. 2009 (in Japanese).

  273. T. Chiba, K. Kondo, and K. Nakagawa, “Comparison of Speech Intelligibility of Localized Speech Using Headphones and Loudspeakers,” Proceedings of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A-2-4, Mar. 2009 (in Japanese).

  274. M. Miura, K. Kondo and H. Isaka, "On Improvement of Speech Annotation Articulation Inside Automobiles," Technical Report of the IEICE, vol. , no. , EA2008-102, pp. 7-12, Dec. 2008.

  275. R. Kanno, K. Kondo, and K. Nakagawa, “,” Proc. Acoustical Society of Japan Fall Meeting, 3-P-13, Sept. 2008 (in Japanese).

  276. Y. Kobayashi, N. Yano, K. Kondo, and K. Nakagawa, “,” Proc. Acoustical Society of Japan Fall Meeting, 1-P-8, Sept. 2008 (in Japanese).

  277. T. Chiba, N. Yano, K. Kondo, and K. Nakagawa, “On the Influence of Real and Virtual Acoustic Space with Individualized Head Related Transfer Function on the Intelligibility of Read Japanese Words,” Proc. Acoustical Society of Japan Fall Meeting, 1-P-11, Sept. 2008 (in Japanese).

  278. Y. Kobayashi, K. Kondo, K. Nakagawa, and K. Takano, "The Influence of Stereo Coding on the 3D Sound Localization Accuracy," Technical Report of the IEICE, vol. 108, no. 179, EA2008-56, pp. 65-70, Aug. 2008.

  279. T. Chiba, K. Kondo, and K. Nakagawa, “On the Influence of Relative Sound Source Location in Real Acoustic Space on the Intelligibility of Read Japanese Words,” Proc. Acoustical Society of Japan Spring Meeting, 3-P-12, Mar. 2008 (in Japanese).

  280. Y. Akiba, K. Kondo, and K. Nakagawa, “Mitigation of Coded Audio Packet Loss Degradation Using LPC Method on the Time-Frequency Frame,” Proc. Acoustical Society of Japan Spring Meeting, 1-P-24, Mar. 2008 (in Japanese).

  281. N. Yano, K. Kondo, K. Nakagawa, and K.Takano, “On the Influence of Localized Speech-noise distance on the Speech Intelligibility,” Proceedings of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-2-3, Mar. 2008 (in Japanese).

  282. Y. Akiba, K. Kondo, K. Takano, and K. Nakagawa, “A Frame Loss Concealment method for Audio Time-Frequency Frames,” Proceedings of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-2-2, Mar. 2008 (in Japanese).

  283. Y. Takano, K. Kondo, and K. Nakagawa, “Estimation of Speech Intelligibility using Speech Recognition,” Proceedings of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-2-1, Mar. 2008 (in Japanese).

  284. R. Kanno, K. Kondo, K. Nakagawa, and K. Takano, “On Robustness Improvement of Audio Watermarks using the Spread Spectrum Method,” Proceedings of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-1-4, Mar. 2008 (in Japanese).

  285. T. Chiba, K. Kondo, K. Takano, and K. Nakagawa, “On the Influence of Localized Noise Position and Level on the Speech Intelligibility in Real Acoustic Space,” Proceedings of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-1-3, Mar. 2008 (in Japanese).

  286. Y. Kobayashi, K. Kondo, K. Takano, and K. Nakagawa, “On the Influence of Speech Coding on the Localized Speech Location Perception in Virtual Acoustic Space,” Proceedings of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-1-2, Mar. 2004 (in Japanese).

  287. T. Hiramatsu, K. Kondo, and K. Nakagawa, “A Location Estimation Using Wireless LAN and ZigBee Signals,” Proceedings of the Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B-1-1, Mar. 2008 (in Japanese).

  288. K. Hiratsuka, K. Kondo, and K. Nakagawa, “Evaluation of an audio watermark based on the patchwork method,” Proceedings of the 2nd Technical Meeting of the Special Interest Group on Multimedia Information Hiding, pp.13-16, Nov. 2007 (in Japanese).

  289. Y. Akiba, Y. Nishiyama, Kondo and K. Nakagawa, “On  Mitigation of Coded Audio Packet Loss Using Linear Prediction Method,” Proc. Acoustical Society of Japan, Fall Meeting, 3-P-16, Sept. 2007 (in Japanese).

  290. T. Chiba, H. Terada, K. Kondo and K. Nakagawa, “Influence of interference sounds on arrival direction recognition precision of conversational speech in the horizontal plane,” Proc. Acoustical Society of Japan Fall Meeting, 3-P-22, Sept. 2007 (in Japanese).

  291. K. Hiratsuka, K. Kondo, K. Takano and K. Nakagawa, “Evaluation of an audio watermark based on the patchwork method,” Proceedings of the 6th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B4-1, Mar. 2007 (in Japanese).

  292. Y. Akiba, K. Kondo, K. Takano and K. Nakagawa, “Method and evaluation of AAC audio packet loss concealment using linear prediction,” Proceedings of the 6th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B4-2, Mar. 2007 (in Japanese).

  293. T. Chiba, K. Kondo, K. Takano and K. Nakagawa, “Accuracy of sound image azimuth perception in real acoustic environments,” Proceedings of the 6th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, B4-3, Mar. 2007 (in Japanese).

  294. Hideyasu Hinokuma, Katsumi Takano, Kazuhiro Kondo and Kiyoshi Nakagawa, "Analog signal transmission in optical multimode fiber with WDM-pulse-position-modulation," 2006 Tohoku-Section Joint Convention Record of Institutes of Electrical and Information Engineers, 1A18, p.18, Akita, Japan, Aug. 2006.

  295. Nobutomo Hanzawa, Tatsunori Yui, Katsumi Takano, Kazuhiro Kondo and Kiyoshi Nakagawa, "The third order optically phase-shifted Hilbert transformers for optical single side-band modulation," 2006 Tohoku-Section Joint Convention Record of Institutes of Electrical and Information Engineers, 1A16, p.16, Akita, Japan, Aug. 2006.

  296. Yuki Sawaguchi, Katsumi Takano, Takashi Murakami, Nobutomo Hanzawa, Kazuhiro Kondo and Kiyoshi Nakagawa, "Influence of un-balanced optical FIR Hilbert transformers on optical SSB standard single-mode fiber transmission," 2006 Tohoku-Section Joint Convention Record of Institutes of Electrical and Information Engineers, 1A15, p.15, Akita, Japan, Aug. 2006.

  297. R. Kaga, K. Kondo and K. Nakagawa, “On estimation of Japanese speech intelligibility using objective speech quality evaluation method PESQ,” Proceedings of the 5th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A4-1, Mar. 2006 (in Japanese).

  298. M. Anzai, K. Kondo and K. Nakagawa, “On active vibration absorbing floors using piezoelectric vibrators,” Proceedings of the 5th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A2-4, Mar. 2006 (in Japanese).

  299. Y, Kitashima, K. Kondo and K. Nakagawa, “On a remote collaboration conference system using localized audio images,” Proceedings of the 5th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A2-3, Mar. 2006 (in Japanese).

  300. H. Terada, K. Kondo and K. Nakagawa, “On the perceived accuracy of localized image conversational speech,” Proceedings of the 5th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A2-2, Mar. 2006 (in Japanese).

  301. T. Hiramatsu, T. Yazawa, K. Kondo and K. Nakagawa, “On position estimation using wireless LAN signals, and applications using the estimated position,” Proceedings of the 5th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A2-1, Mar. 2006 (in Japanese).

  302. K. Kondo, T. Fujita, K. Takano, and K. Nakagawa, “An Equalization Filter for Bone-conducted Speech,” Proc. Acoustical Society of Japan Spring Convention, 3-Q-12, Mar. 2006 (in Japanese).

  303. M. Fujimori, K. Kondo, K. Takano, and K. Nakagawa, “On a Revised Word-pair List for the Japanese Intelligibility Test,” Proc. Acoustical Society of Japan Spring Convention, 3-P-25, Mar. 2006 (in Japanese).

  304. T. Niizeki, K. Kondo, K. Takano, and K. Nakagawa, “On an Overhead Reduction Method in MPEG Audio Packet Loss Concealment,” Proc. Acoustical Society of Japan Spring Convention, 1-Q-30, Mar. 2006 (in Japanese).

  305. T. Niizeki, K. Kondo and K. Nakagawa, “On Quality Improvement of Compressed Audio Signal Degradation Using Low Rate Coded Overhead Data,” Proc. Acoustical Society of Japan Spring Convention, 3-P-9, Mar. 2005 (in Japanese).

  306. K. Kondo and K. Nakagawa, “Experimental Evaluation of an Active Speech Control Method,” Proc. Acoustical Society of Japan Spring Convention, 3-Q-1, Mar. 2005 (in Japanese).

  307. S. Takehana, K. Kondo and K. Nakagawa, “Evaluation of a Data Hiding Method for Audio Signals,” Proceedings of the 6th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A2-3, Mar. 2005 (in Japanese).

  308. M. Fujimori, K. Kondo and K. Nakagawa, “On Low Frequency Pass Characteristics of a One-out-of-two Selection-based Japanese Intelligibility Test,” Proceedings of the 6th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A2-2, Mar. 2005 (in Japanese).

  309. M. Fujimori, K. Kondo and K. Nakagawa, “Detailed Evaluation of a One-out-of-two Selection-based Japanese Intelligibility Test,” Proceedings of the 5th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A2-4, Mar. 2004 (in Japanese).

  310. T. Niizeki, K. Kondo and K. Nakagawa, “A Packet Loss Concealment Method for MPEG Audio Code with Low Bit Rate Compressed Audio Overhead and Packet Interleaving,” Proceedings of the 5th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A2-5, Mar. 2004 (in Japanese).

  311. K. Kondo and K. Nakagawa, “On Long Term Prediction for Active Cellular Speech Emission Control,” Proc. Acoustical Society of Japan Fall Convention, 1-8-3, Mar. 2003 (in Japanese).

  312. S. Takehana, K. Kondo and K. Nakagawa, “A Digital Audio Watermark Using Linear Predictive Coding,” Proc. Acoustical Society of Japan Fall Convention, 2-Q-3, Mar. 2003 (in Japanese).

  313. S. Takehana, K. Kondo and K. Nakagawa, “On a Data Hiding Method for Audio Signals Using the Spread Spectrum Algorithm,” Proceedings of the Joint Conference of EE-related Societies of the Tohoku Chapter, 2I22, Iwate, Japan, Aug. 2003 (in Japanese).

  314. S. Abe, K. Nakagawa, K. Takano and K. Kondo, “A Routing Method for Adhoc Networks Using Nearest Neighbor Terminal Relays,” Proceedings of the Joint Conference of EE-related Societies of the Tohoku Chapter, 1J6, Iwate, Japan, Aug. 2003 (in Japanese).

  315. T. Kobayashi, J. Shimada, K. Kondo and K. Nakagawa, “Packet Loss Concealment for MPEG4 Audio Coding,” Proceedings of the 4th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A1, Mar. 2003 (in Japanese).

  316. Y. Kitajima, K. Kondo and K. Nakagawa, “Document Sharing Subsystem for Real-time Groupwares,” Proceedings of the 4th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A2, Mar. 2003 (in Japanese).

  317. T. Seino, K. Kondo and K. Nakagawa, “On Data Hiding Methods for Wideband Audio Coding,” Proceedings of the 4th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A3, Mar. 2003 (in Japanese).

  318. S. Takehana, K. Kondo and K. Nakagawa, “On a Data Hiding Method for Audio Signals Using the Spread Spectrum Algorithm,” Proceedings of the 4th Technical Meeting of the Information Processing Society of Japan Tohoku Chapter, A4, Mar. 2003 (in Japanese).

  319. K. Kondo and K. Nakagawa, “On Long Term Prediction for Active Cellular Speech Emission Control,” Proc. Acoustical Society of Japan Spring Convention, 3-P-24, Mar. 2003 (in Japanese).

  320. Y. Sasaki, K. Nakagawa, K. Takano and K. Kondo, “Self-restoration Properties of Wavelength Utilization-Optimized VWP Networks,” Proc. of the Spring IEICE National Convention, B-6-57, Mar. 2003 (in Japanese).

  321. K. Kondo and K. Nakagawa, “On Active Speech Control of  Cellular Speech Emission,” Proceedings of the International Conference on Spoken Language Proceedings of the Fall Meeting of the Acoustical Society of Japan, 3-P-20, Akita, Japan, Sept. 2002 (in Japanese).

  322. T. Watanabe, K. Kondo and K. Nakagawa, “On Optimized-delay Spanning Trees,” Proceedings of the Joint Conference of EE-related Societies of the Tohoku Chapter, 1D-09, Yonezawa, Yamagata, Japan, Aug. 2002 (in Japanese).

  323. S. Watanabe, K. Kondo, M. Sato, K. Nakagawa, “Quality Improvement and Evaluation for Compressed Audio Signal Degradation Due to Packet Loss,” Proc. Acoustical Society of Japan Spring Convention, 1-P-28, Mar. 2002 (in Japanese).

  324. S. Watanabe, K. Kondo, M. Sato, K. Nakagawa, “Quality Improvement by Interleaving for Compressed Audio Signal Degradation Due to Packet Loss,” Proc. ITE Winter Convention, 6-4, Dec. 2001 (in Japanese).

  325. Kikuji Tanaka, Katsumi Takano, Kazuhiro Kondo and Kiyoshi Nakagawa,"Eye-opening Characteristics of Optical SSB Modulation using an optical Hilbert Transformer," Proceedings of the Fall National Convention of the IEICE, B-10-131, Sept. 2001 (in Japanese).

  326. Takehito, Watanabe, Kazuhiro Kondo and Kiyoshi Nakagawa, “On a Real-time Multimedia Communication System using the Internet,” Proceedings of the Joint Conference of EE-related Societies of the Tohoku Chapter, 2H10, p.272, Honjo, Akita, Aug., 2001 (in Japanese).

  327. Kazuhiro Kondo, Ryo Izumi and Kiyoshi Nakagawa, “Initial Evaluation of a Novel Japanese Intelligibility Test,” Technical Report of the IEICE, SP2000-163, Tokyo, Japan, Mar. 2001 (in Japanese).

  328. Kazuhiro Kondo, Ryo Izumi and Kiyoshi Nakagawa, “Initial Evaluation of an Improved Japanese Speech Intelligibility Test,” Proceedings of the Spring Meeting of the Acoustical Society of Japan, 3-Q-20, Tsukuba, Japan, Mar. 2000 (in Japanese).

  329. Kazuhiro Kondo, Ryo Izumi and Kiyoshi Nakagawa, “On the Effect of Familiarity on Japanese Word Intelligibility Tests,” Proceedings of the Spring Meeting of the Acoustical Society of Japan, 3-Q-19, Tsukuba, Japan, Mar. 2000 (in Japanese).

  330. Atsushi Kikuchi, Kazuhiro Kondo, Kiyoshi Nakagawa and Kikuji Tanaka, “On Active Broadband Noise Control Using Sub-band Adaptive Predictor,” Proceedings of the Spring Meeting of the Acoustical Society of Japan, 1-P-15, Tsukuba, Japan, Mar. 2000 (in Japanese).

  331. Y. Naganuma, K. Takano, K. Kondo and K. Nakagawa, “Study on Fiber Dispersion Tolerance with Narrow-band Optical Modulations,” Proceedings of the Spring National Convention of the IEICE, Mar. 2001 (in Japanese).

  332. K. Tanaka, K. Takano, K. Kondo and K. Nakagawa, “Characteristics of Optical SSB Modulation Using Hilbert Transformer,” Proceedings of the Spring National Convention of the IEICE, Mar. 2001 (in Japanese).

  333. Y. Naganuma, K. Takano, K. Kondo and K. Nakagawa, “Transmission Characteristics for High Dispersion Fiber Using Optical SSB-SC Modulation,” Proceedings of the Fall National Convention of the IEICE, B-10-, p. Oct. 2000 (in Japanese).

  334. Y. Naganuma, K. Takano, K. Kondo and K. Nakagawa, “Eye-opening Characteristics of Optical SSB-SC Modulation on High Dispersion Transmission Line,” Technical Report of the IEICE, OCS2000-52, pp. 25-30, Sept. 2000 (in Japanese).

  335. K. Kondo, R. Izumi and K. Nakagawa, “Towards an Improved Speech Intelligibility Testing in Japanese,” Proceedings of the Fall Meeting of the Acoustical Society of Japan, Morioka, Japan, Sept. 2000 (in Japanese).

  336. H. Kanazawa, K. Kondo, A. Yoshii and K. Nakagawa, “On Digital Watermarks for Predictive Speech Coders,” Proceedings of the Joint Conference of EE-related Societies of the Tohoku Chapter, 2A-4, p. 19, Aizu, Japan, Aug. 2000 (in Japanese).

  337. K. Kondo and K. Nakagawa, “Towards a Novel Japanese Intelligibility Test,” Technical Report of the IEICE, SP2000-37, Fukui, Japan, Jul. 2000 (in Japanese).

  338. K. Kondo, “The Internet and Multimedia,” Notes for the Technical Tutorials of the Local Tohoku Chapter of the IEICE, Yonezawa, Japan, Sept. 1999 (in Japanese).

  339. K. Kondo, Y. H. Kao and B. Wheatley, "Inter-phrase/word Context Dependent Models for Continuously Read Japanese Speech," Proceedings of the Fall Meeting of the Acoustical Society of Japan, Kumamoto, Japan, Oct. 1994.

  340. K. Kondo, J. Picone and B. Wheatley, "A Comparative Analysis of Japanese and English Digit Recognition," Proceedings of the Spring Meeting of the Acoustical Society of Japan, Chiba, Japan, Mar. 1994 (in Japanese).

  341. K. Kondo and A. Gonda, "A Video Coding Scheme for HDTV Digital VCRs, " Proceedings of the Institute of Television Engineers of Japan Annual Convention, Sapporo, Japan, Jul. 1992 (in Japanese).

  342. K. Kondo and M. Ohno, "On Variable Rate Embedded ADPCM PADs for Private ATM Networks," Proceedings of the IEICE National Convention, Tokushima, Japan, Mar. 1991 (in Japanese).

  343. K. Kondo, M. Ohno and T. Suzuki, "Variable Rate Embedded ADPCM Coding for ATM Networks," Technical Report of the IEICE, CS90-45, Fukui,Japan, Oct. 1990 (in Japanese).

  344. K. Kondo, M. Ohno and T. Suzuki, "A Variable Rate Embedded ADPCM Coding Scheme for Private ATM Networks," Proceedings of the IEICE National Convention, Hiroshima, Japan, Oct. 1990 (in Japanese).

  345. M. Ohno and K. Kondo, "A Study on Missing Packet Reconstruction Method for Voice Communication Systems," Proceedings of the IEICE National Convention, Hiroshima, Japan, Mar. 1990 (in Japanese).

  346. K. Kondo, T. Suzuki, Y. Asakawa, A. Ichikawa and I. Mase, "On DSI with In-spurt Freezeouts for Small Scale Systems," Proceedings of the IEICE National Convention, Osaka, Japan, Mar. 1989 (in Japanese).

  347. Y. Asakawa, A. Ichikawa, K. Kondo and T. Suzuki, "Improvements of a Thinned-out Residual (TOR) Speech Coding Method and its Subjective Evaluation," Technical Report of the IEICE, SP88-58, Sept., 1988 (in Japanese).

  348. K. Kondo, T. Miyamoto, T. Suzuki, Y. Asakawa and R. Muramatsu, "Suppression of Unpleasant Noises Created by Background Noises," Proceedings of the IEICE National Convention, Tokyo, Japan, Sept. 1986 (in Japanese).

  349. T. Miyamoto, K. Kondo, T. Suzuki, Y. Asakawa and A. Ichikawa, "Development of a Single DSP 8 kbps Codec," Technical Report of the IEICE, SP86-19, June 1986 (in Japanese).

 

Patents

Issued (U.S.)

  1. Y. H. Kao and K. Kondo, Method for Phonetic Modeling Using Acoustic Decision Tree, U. S. Patent 6317712 B1, applied Feb. 3, 1998, issued Nov. 13, 2001.

  2. N. Hamanmoto, K. Kondo, et al., Digital Information System, Digital Audio Signal Processor and  Signal Converter, U. S. Patent 6282611 B1, applied May 22, 1995, issued Aug. 28, 2001.

  3. K. Kondo, I. Kudo and Y. H. Kao, "Speech Recognition Using Clustered Between Word and/or Phrase Coarticulation," U. S. Patent 5819221, applied Aug. 31, 1994, issued Oct., 1998.

  4. K. Kondo and M. Ohno, "Speech Packet Communication System," U. S. Patent 5406560, applied Aug. 5, 1991, issued Apr. 11, 1995.

  5. K. Kondo and M. Ohno, "Speech Packet Communication System and Method," U. S. Patent 5130985, applied Nov. 21, 1989, issued Jul 14, 1992.

  6. Y. Asakawa, A. Ichikawa, K. Kondo and T. Suzuki, "Speech Coding System Using Excitation Pulse Train," U. S. Patent 5119424, applied Dec. 12, 1988, issued Jun. 2, 1992.

  7. Y. Asakawa, T. Miyamoto, K. Kondo, A. Ichikawa and T. Suzuki, "Speech Coding System and Method," U. S. Patent 5060268, applied Feb. 17, 1987, issued Oct. 22, 1991.

  8. K. Kondo and T. Suzuki, "System for and Method of Multiplexing Speech Signals Utilizing Priority Signals for Individual Transmission Channels," U. S. Patent 4993022, applied Feb. 7, 1989, issued Feb. 12, 1991.

  9. R. Muramatsu, T. Miyamoto, K. Kondo and T. Suzuki, "Speech Coding System Using Variable Threshold Values for Noise Reduction," U. S. Patent 4918734, applied May 21, 1987, issued Apr. 17, 1990.

  10. K. Kondo and T. Suzuki, "Method and System for Transmitting Variable Rate Speech Signal," U. S. Patent 4903301, applied Feb. 12, 1988, issued Feb. 20, 1990.

  11. T. Miyamoto, S. Nakabayashi, T. Suzuki, K. Kondo and S. Niina, "Echo Suppressor," U. S. Patent 4864608, applied Aug. 10, 1987, issued Sept. 5, 1989.

  12. K. Kondo, T. Suzuki and T. Miyamoto, "Voice and Data Multiplexer System," U. S. Patent 4809271 applied Nov. 13, 1987, issued Feb. 28, 1989.

 

Issued /Registered (Japan)

  1. K. Kondo et al., Information Record and Playback Method and Apparatus, JP3047987, applied Aug. 24, 1990, issued Jun. 5, 2000.

  2. K. Kondo and T. Suzuki, Variable Rate Speech Signal Transmission Method and Transmission System, JP2914974, applied Feb. 5, 1988, issued Jul. 5, 1999.

  3. K. Kondo and M. Ohno, Speech Packet Transmission Method and Apparatus, JP2810069, applied Nov. 25, 1998, issued Dec. 15, 1998.

  4. M. Ohno, K. Kondo, Y. Takiyasu and M. Asano, Speech Packet Processing Method, JP2760810, applied Sept. 19, 1988, issued on. 4, 1998.

  5. M. Ohno, K. Kondo and Y. Takiyasu, Speech Signal Processing Apparatus, JP2708453, applied Mar. 23, 1988, issued Feb. 4, 1998.

  6. Y. Asakawa, A. Ichikawa, K. Kondo and T. Suzuki, Speech Coding Method, JP2707564, applied Dec. 14, 1987, issued Jan. 28, 1998.

  7. K. Kondo and T. Suzuki, Speech Multiplexing System, JP2692104, applied Feb. 12, 1988, issued Dec. 17, 1997.

  8. Y. Asakawa, T. Miyamoto, K. Kondo, A. Ichikawa and T. Suzuki, Pitch Extraction Method, JP2585214, applied Feb. 21, 1986, issued Feb. 26, 1997.

  9. R. Muramatsu, T. Miyamoto, K. Kondo and T. Suzuki, Speech Coding Method, JP H7-48695, applied May 23, 1986, registered May 24, 1995.

  10. T. Miyamoto, S. Nakabayashi, T. Suzuki, K. Kondo and S. Niina, Echo Suppressor,JP H7-123235, applied Aug. 13, 1986, registered Dec. 25, 1995.

  11. K. Kondo, T. Suzuki and T. Miyamoto, Speech/Data Transmission Apparatus, JP H7-118749, applied Nov. 14, 1986, registered Dec. 18, 1995.

  12. Y. Mitomo, S. Nakabayashi, R. Muramatsu, T. Miyamoto, K. Kondo and T. Suzuki, Frame Synchronization Detection Apparatus, JP H7-58959, applied Feb. 28, 1986, registered Jun. 21, 1995.

 

Applied (Japan, 2002-)

  1. K. Kondo and K. Nakagawa, Active Sound Control Method, Application No. 2002-175725, Publication No. 2004-23446, applied June 2002, published Jan. 2004.

  2. K. Kondo and K. Nakagawa, Speech Packet Loss Concealment Method, Application No. 2003-309745, Publication No. 2005-77889, applied Sept. 2003, published Mar. 2005.

 

Skills

Language

Fluent in both Japanese and English. Strong written communication and oral presentation skills in both languages.

 

Programming

C, Perl, DSP assembly, Visual C++, MATLAB, Basic, Fortran, PL/I.

 

Software Tools

Microsoft Word, Excel, PowerPoint, MATLAB, Entropics Xwaves, Aldus FrameMaker, Mac Draw II, Aldus Pagemaker, EGWord (Japanese Word Processor), Latex, pLatex (Japanese extension of Latex).

 


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Created on December 8, 1999.

Revised on August 1, 2023.