Updated on 2023/12/26

 
MIZUMACHI Mitsunori
 
Scopus Paper Info  
Total Paper Count: 0  Total Citation Count: 0  h-index: 4

Citation count denotes the number of citations in papers published for a particular year.

Affiliation
Faculty of Engineering Department of Electrical and Electronic Engineering
Job
Professor
E-mail
メールアドレス
External link

Research Interests

  • acoustic signal processing

  • Acoustic information science

Research Areas

  • Informatics / Perceptual information processing

Undergraduate Education

  • 1995.03   Kyushu Institute of Design   Faculty of Art and Technology   Department of Acoustic Design   Graduated   Japan

Post Graduate Education

  • 2000.03   Japan Advanced Institute of Science and Technology   Graduate School, Division of Information Science   Department of Information Processing   Doctoral Program   Completed   Japan

Degree

  • Japan Advanced Institute of Science and Technology  -  Ph.D. in Information Science   2000.03

  • Japan Advanced Institute of Science and Technology  -  Master   1997.03

Biography in Kyutech

  • 2022.12
     

    Kyushu Institute of Technology   Faculty of Engineering   Department of Electrical and Electronic Engineering   Professor  

  • 2010.12
    -
    2022.11
     

    Kyushu Institute of Technology   Faculty of Engineering   Department of Electrical and Electronic Engineering   Associate Professor  

Biography before Kyutech

  • 2000.04 - 2004.06   Advanced Telecommunications Research Institute International (ATR)   Researcher   Japan

Academic Society Memberships

  • 2018.05 - 2019.05   電子情報通信学会 基礎・境界ソサイエティ ソサイエティ代表委員   Japan

  • 2017.05   日本音響学会 評議員   Japan

  • 2017.05 - 2021.05   日本音響学会 編集委員(会誌部会)   Japan

  • 2017.05 - 2018.05   日本音響学会 電気音響研究会 副委員長   Japan

  • 2017.05 - 2018.05   電子情報通信学会 応用音響研究会 副委員長   Japan

  • 2016.05 - 2017.05   電子情報通信学会 音響・超音波サブソサイエティ 会長   Japan

  • 2016.05 - 2017.05   日本音響学会 電気音響研究会 委員長   Japan

  • 2016.05 - 2017.05   電子情報通信学会 応用音響研究会 委員長   Japan

  • 2016.05 - 2017.05   電子情報通信学会 代議員   Japan

  • 2016.05 - 2017.05   電子情報通信学会 基礎・境界ソサイエティ 副会長   Japan

  • 2015.06 - 2017.05   電子情報通信学会九州支部会計幹事   Japan

  • 2015.05 - 2016.05   日本音響学会 電気音響研究会 副委員長   Japan

  • 2015.05 - 2016.05   電子情報通信学会 応用音響研究会 副委員長   Japan

  • 2015.01 - 2017.05   電子情報通信学会 Fundamentals Review 編集委員   Japan

  • 2014.04 - 2016.03   日本音響学会九州支部会計幹事   Japan

  • 2013.05 - 2015.05   日本音響学会 電気音響研究会 幹事   Japan

  • 2013.05 - 2014.04   電子情報通信学会 和文A論文誌 小特集号 編集幹事   Japan

  • 2012.05 - 2015.05   電子情報通信学会 応用音響研究会 幹事   Japan

  • 2012.04 - 2014.03   日本音響学会九州支部評議員   Japan

  • 2005.04   The institue of electronics, information and communication engineers (IEICE)   Japan

  • 2005.04   Acoustical Society of Japan   Japan

  • 2004.04   The Institute of Electrical and Electronics Engineering (IEEE)   United States

  • 2004.04   The Acoustic Society of America   United States

▼display all

Research Career

  • 音の主観印象の定量化

    聴覚的印象,モデリング

    研究期間: 2008.06  - 

Papers

  • Subband Optimization of Nonlinear Beamformer with Long Short-Term Memory in Low-Frequency Region Reviewed International journal

    M. Mizumachi, K. Nashiro

    Proc. 29th International Congress on Sound and Vibration (ICSV29)   Paper ID: 483   2023.07

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  • Singing Voice Range Profiling Toolbox with real-time interaction and its application to make recording data reusable Reviewed International journal

    H. Kawahara, KI. Sakakibara, K. Yatabe, M. Mizumachi, T. Kitamura

    Proc. Stockholm Music Acoustics Conference 2023 (SMAC 2023)   160 - 166   2023.06

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  • Relationship between perceptual width of stereo stage and inter-channel cross-correlation Reviewed International journal

    M. Mizumachi, T. Horiuchi

    Proc. 154th AES Convention   Express Paper 68   2023.05

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  • Analysis of Temporal Changes in Prosodic Features of Positive and Negative Emotions in Spontaneous Speech Reviewed

    Y. Aoki, M. Mizumachi

    Proc. ICIAE2023   VS-2   2023.03

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    Authorship:Last author   Language:English   Publishing type:Research paper (international conference proceedings)

  • Relationship between the Temporal Variation of Fundamental Frequency and Subjective Hoarseness Reviewed

    S. Tomimatsu, M. Mizumachi

    Proc. ICIAE2023   PS-4   2023.03

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  • Higher accuracy self-supervised visual odometry with reliable projection Reviewed

    Zhou S., Yang Z., Zhu M., Li H., Serikawa S., Mizumachi M., Zhang L.

    Artificial Life and Robotics   27 ( 3 )   568 - 575   2022.08

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    Language:English   Publishing type:Research paper (scientific journal)

    DOI: 10.1007/s10015-022-00766-7

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  • Optimization of Nonlinear Beamformer with Long Short-term Memory Reviewed

    M. Mizumachi, S. Arase

    Proc. 28th International Congress on Sound and Vibration (ICSV28)   Paper ID: 707   2022.07

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  • Perceptual optimization of hybrid stereo width control method compared with loudspeakers reproduction Reviewed International journal

    M. Mizumachi, Y. Ueno, T. Horiuchi

    Proc. 152nd AES Convention   Paper Number: 10571   2022.05

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  • Perceptual optimization of stereo width shrinkage method in headphone reproduction Reviewed

    Ueno Yui, Mizumachi Mitsunori, Horiuchi Toshiharu

    Acoustical Science and Technology ( ACOUSTICAL SOCIETY OF JAPAN )   43 ( 2 )   170 - 172   2022.03

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)

    DOI: 10.1250/ast.43.170

    Scopus

    CiNii Article

    CiNii Research

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  • Round-table discussion on high-reality audio

    Ando Akio, Ozawa Kenji, Kamekawa Toru, Nakahara Masataka, Nishiguchi Masayuki, Aoki Shuichi, Sugimoto Takehiro, Mizumachi Mitsunori

    THE JOURNAL OF THE ACOUSTICAL SOCIETY OF JAPAN ( Acoustical Society of Japan )   78 ( 3 )   108 - 113   2022.03

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    Authorship:Last author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)

    DOI: 10.20697/jasj.78.3_108

    CiNii Research

  • Inter-channel Cross-correlations of Stereo Width Shrinkage Methods Based on Amplitude and Phase Differences Reviewed

    Y. Ueno, M. Mizumachi, T. Horiuchi

    Proc. ICIAE2022   VS2-2   2022.03

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  • Investigation of Suitable Training Conditions for Nonlinear Beamformer Reviewed

    S. Arase, M. Mizumachi

    Proc. ICIAE2022   PS-2   2022.03

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  • Perceptual optimization of hybrid stereo width control method compared with loudspeakers reproduction Reviewed

    Mizumachi M., Ueno Y., Horiuchi T.

    AES Europe Spring 2022 - 152nd Audio Engineering Society Convention 2022   236 - 240   2022.01

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  • OPTIMIZATION OF NONLINEAR BEAMFORMER WITH LONG SHORT-TERM MEMORY Reviewed

    Mizumachi M., Arase S.

    Proceedings of the International Congress on Sound and Vibration   2022.01

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  • A Method to Automatic Create Dataset for Training Object Detection Neural Networks Reviewed

    Zhou S., Yang Z., Zhu M., Li H., Serikawa S., Mizumachi M., Zhang L.

    IEEE Access   10   80505 - 80517   2022.01

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    Language:English   Publishing type:Research paper (scientific journal)

    DOI: 10.1109/ACCESS.2022.3195490

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  • Hardware Development of Color Image Contrast Enhancement by High-level Synthesis Reviewed

    Yamawaki A., Mizumachi M., Serikawa S.

    TENSYMP 2021 - 2021 IEEE Region 10 Symposium   2021.08

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    Language:English   Publishing type:Research paper (international conference proceedings)

    DOI: 10.1109/TENSYMP52854.2021.9550810

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  • Non-linear beamformer with long short-term memory network Reviewed International journal

    M. Mizumachi, R. Oka

    Proc. Inter-noise 2021   2021.08

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  • Power-saving Reproduction Algorithm for Speech Signals Reviewed

    M. Nakagawara, M. Mizumachi

    Journal of the Institute of Industrial Applications Engineers   9 ( 3 )   97   2021.07

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    Language:English   Publishing type:Research paper (scientific journal)

    DOI: 10.12792/jiiae.9.97

  • Performance evaluation of the nonlinear beamformer with the small-scall mems microphone array Reviewed International journal

    M. Mizumachi, R. Oka

    Proc. 27th International Congress on Sound and Vibration (ICSV27)   2021.07

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  • Stereo Matching Based on Features of Image Patch Reviewed

    S. Zhou, H. Li, M. Zhu, Z. Li, M. Mizumachi, L. Zhang

    Journal of the Institute of Industrial Applications Engineers   9 ( 3 )   91   2021.07

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    Language:English   Publishing type:Research paper (scientific journal)

    DOI: 10.12792/jiiae.9.91

  • Self-supervised monocular depth estimation with occlusion mask and edge awareness Reviewed International journal

    Zhou S., Zhu M., Li Z., Li H., Mizumachi M., Zhang L.

    Artificial Life and Robotics   26 ( 3 )   354 - 359   2021.05

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    Language:English   Publishing type:Research paper (scientific journal)

    DOI: 10.1007/s10015-021-00685-z

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  • Perceptual optimization of stereo width control methods in headphones Reviewed International journal

    Y. Ueno, M. Mizumachi, T. Horiuchi

    Proc. 150th AES Convention ( Audio Engineering Society )   Paper Number: 10480   2021.05

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  • Proposal of Speed-Up Method for Pulse Type of Digital Switch and Expansion of Application Scope to Them Invited Reviewed

    R. Iwaizono, M. Mizumachi, S. Serikawa

    Proc. ICIAE 2021   VS-6   2021.03

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  • Proposal of a Digital Switch for Easy Changes of Number and Types Invited Reviewed

    R. Iwaizono, M. Mizumachi, S. Serikawa

    Proc. ICIAE 2021   VS-3   2021.03

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  • [Keynote Lecture] Acoustic Signal Extraction Relying on Spatial Cues Invited

    M. Mizumachi

    Proc. ICIAE 2021   KS-1, Keynote Lecture   2021.03

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (international conference proceedings)

  • Sharpening Directivity of Beamforming based on Neural Networks using Virtual Observations Reviewed

    Kanekiyo Y., Mizumachi M., Miyazaki R.

    2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021   512 - 513   2021.01

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    Language:English   Publishing type:Research paper (international conference proceedings)

    DOI: 10.1109/GCCE53005.2021.9621789

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  • Performance evaluation of the nonlinear beam-former with small-scale mems microphone array Reviewed International journal

    Mizumachi M., Oka R.

    "Advances in Acoustics, Noise and Vibration - 2021" Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021   2021.01

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  • Perceptual optimization of stereo width control methods in headphones Reviewed International journal

    Ueno Y., Mizumachi M., Horiuchi T.

    150th Audio Engineering Society Convention, AES 2021   2021.01

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  • Non-linear beamformer with long short-term memory network Reviewed International journal

    Mizumachi M., Oka R.

    Proceedings of INTER-NOISE 2021 - 2021 International Congress and Exposition of Noise Control Engineering   2021.01

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (international conference proceedings)

    DOI: 10.3397/IN-2021-2673

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  • Interactive and real-time acoustic measurement tools for speech data acquisition and presentation: Application of an extended member of time stretched pulses Reviewed

    Kawahara H., Yatabe K., Sakakibara K.I., Mizumachi M., Morise M., Banno H., Irino T.

    Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH   3   2197 - 2198   2021.01

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  • Development of a Wireless Communication System for Reliable Acoustic Data Collection Toward Anomaly Detection in Mechanical Equipment Reviewed International journal

    Takano C., Fujino S., Nobayashi D., Tsukamoto K., Mizumachi M., Ikenaga T.

    Proceedings - 2021 International Conference on Computational Science and Computational Intelligence, CSCI 2021   1544 - 1547   2021.01

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    Language:English   Publishing type:Research paper (international conference proceedings)

    DOI: 10.1109/CSCI54926.2021.00300

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  • Simultaneous measurement of time-invariant linear and nonlinear, and random and extra responses using frequency domain variant of velvet noise Reviewed

    Kawahara H., Sakakibara K.I., Mizumachi M., Morise M., Banno H.

    2020 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2020 - Proceedings   174 - 183   2020.12

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    We introduce a new acoustic measurement method that can measure the linear time-invariant response, the nonlinear time-invariant response, and random and time-varying responses simultaneously. The method uses a set of orthogonal sequences made from a set of unit FVNs (Frequency domain variant of Velvet Noise), a new member of the TSP (Time Stretched Pulse). FVN has a unique feature that other TSP members do not. It is a high degree of design freedom that makes the proposed method possible without introducing extra equipment. We introduce two useful cases using two and four orthogonal sequences and illustrates their use using simulations and acoustic measurement examples. We developed an interactive and realtime acoustic analysis tool based on the proposed method. We made it available in an open-source repository. The proposed response analysis method is general and applies to other fields, such as auditory-feedback research and assessment of sound recording and coding.

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  • Performance evaluation of power-saving audio reproduction Reviewed International journal

    M. Mizumachi, T. Nakashima, M. Nakagawara

    Proc. E-Forum Acousticum 2020   Paper ID: 321   2020.12

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  • [Keynote Lecture] Acoustic Beamforming for Selective Listening Under Noisy Environments Invited Reviewed

    M. Mizumachi

    Proc. 4th International Conference on Technology and Social Science (ICTSS2020)   IPS-12 Keynote Lecture   2020.12

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  • Perceptual Evaluation of Power-saving Audio Playback Algorithm Based on Auditory Characteristics Invited Reviewed

    M. Nakagawara, M. Mizumachi

    Proc. 4th International Conference on Technology and Social Science (ICTSS2020)   IPS-12-04   2020.12

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  • Comparison of Subjective Characteristics Between Binaural Rendering and Stereo Width Control Method Invited Reviewed

    Y. Ueno, M. Mizumachi, T. Horiuchi

    Proc. 4th International Conference on Technology and Social Science (ICTSS2020)   IPS-12-03   2020.12

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  • Proposal of Digital Touch Panel Switch for Easy Addition and Deletion of Panels Invited Reviewed

    R. Iwaizono, M. Mizumachi, S. Serikawa

    Proc. 4th International Conference on Technology and Social Science (ICTSS2020)   IPS-12-01   2020.12

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  • Recommended protocols for acoustic recording of speech data for high reusability Invited Reviewed

    Sakakibara Ken-Ichi, Kawahara Hideki, Mizumachi Mitsunori

    THE JOURNAL OF THE ACOUSTICAL SOCIETY OF JAPAN ( Acoustical Society of Japan )   76 ( 6 )   343 - 350   2020.06

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    Language:Japanese   Publishing type:Research paper (scientific journal)

    DOI: 10.20697/jasj.76.6_343

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    CiNii Research

    Other Link: https://ci.nii.ac.jp/naid/130007948445

  • Relationship between objective and subjective evaluation of heavily-distorted speech signals Reviewed International journal

    M. Mizumachi

    Proc. 12th Speech in Noise Workshop   P-19   2020.01

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  • Perceptual evaluation of binaural rendering and stereo width control in headphone reproduction Reviewed

    Ueno Y., Mizumachi M., Horiuchi T.

    148th Audio Engineering Society International Convention   2020.01

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    Two-channel stereophonic sound reproduction is one of the most important issues in audio engineering. Most of stereo music sources, however, cannot naturally reproduce spatial impression through earphones and headphones. In this study, stereo sources are converted by either binaural rendering or stereo width control. The former convolves head-related impulse responses into the original stereo sources, and the latter shrinks the perceptual spatial width by adding the monaural signal. Perceptual differences in between the above methods are investigated on several spatial attributes. It is confirmed that the binaural rendering is suited to reproduce the spatial impression related to the whole sound field and the stereo width control is suitable for naturally characterizing the spatial attributes for individual sound sources.

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  • Frequency domain variant of velvet noise and its application to acoustic measurements Reviewed International journal

    H. Kawahara, K. Sakakibara, M. Mizumachi, H. Banno, M. Morise, and T. Irino

    Proc. APSIPA ASC 2019   2019.11

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  • Frequency domain variant of Velvet noise and its application to acoustic measurements Reviewed International journal

    Kawahara H., Sakakibara K.I., Mizumachi M., Banno H., Morise M., Irino T.

    2019 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2019   1523 - 1532   2019.11

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    DOI: 10.1109/APSIPAASC47483.2019.9023247

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  • Neural Network-based Broadband Beamformer with Less Distortion Reviewed

    M. Mizumachi

    Proc. International Congress on Acoustics (ICA 2019)   2019.09

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  • Neural network-based direction-of-arrival estimation with cross correlation function Reviewed

    Mizumachi M., Okita K.

    Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019   2019.07

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  • Performance evaluation of a neural network-based beamformer with a small-scale microphone array Reviewed

    Inter-noise   2019.06

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  • Proposal of power-saving audio playback algorithm based on auditory masking Reviewed

    Nakashima T., Nakagawara M., Mizumachi M.

    AES 146th International Convention   2019.03

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  • Neural network-based direction-of-arrival estimation with cross correlation function Reviewed

    Mizumachi M., Okita K.

    Proceedings of the 26th International Congress on Sound and Vibration, ICSV 2019   2019.01

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    Direction-of-arrival (DOA) estimation has been one of the important issues in acoustic signal processing. It is well known that the DOA can be estimated based on the cross correlation with stereo observations. It is, however, difficult to accurately estimate the DOA because the cross correlation-based function could not yield the sharp spatial feature. On the other hand, the multiple signal classification (MUSIC) algorithm provides the pointed spatial feature but it requires the exact number of sound sources in advance. In this paper, the cross correlation-based spatial feature is sharpened using a neural network. The neural network is trained using the cross correlation-based spatial feature calculated from the stereo observations and the binary teacher signals. It is confirmed that the non-linear cross correlation-based spatial feature has an extremely sharp peak at the direction of the target sound source without the information on the number of sound sources

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  • Neural network-based broadband beamformer with less distortion Reviewed

    Mizumachi M.

    Proceedings of the International Congress on Acoustics   2019-September   2760 - 2764   2019.01

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    Beamforming has been one of the important issues in the field of multi-channel signal processing including acoustic signal processing. A wide variety of beamformers have been proposed for each application. In general, acoustic beamforming deals with broadband signals such as speech signals compared to narrowband beamforming for antenna array and radar applications. Recently, neural network-based non-linear beamformers become popular but have a problem that causes an annoying non-linear distortion on the output signal. In the case of speech enhancement, it is a serious problem because our auditory system is highly sensitive to artificial non-linear distortion on speech signals. This paper proposes to solve the problem with the relaxed dual cost functions in the neural network-based beamformer for speech enhancement. The primary cost function aims at sharpening the beam-pattern, and the second cost function is introduced to achieve decreasing speech distortion. Those cost functions are alternatively used for optimizing the beam-pattern in the frequency range of speech signals. The feasibility of the proposed method is confirmed by carrying out a listening test.

    DOI: 10.18154/RWTH-CONV-239926

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  • Neural network-based beamformer with dual cost functions Reviewed

    2018.11

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  • Noise Reduction using Neural Network Trained with Amplitude Spectra Reviewed

    Inter-noise   2018.08

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  • What is speech intelligibility? Reviewed

    2018.07

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  • Power Saving Audio Playback Algorithm Based on Auditory Characteristics Reviewed

    Paper No. 9933   2018.05

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  • Noise reduction using neural network trained with amplitude spectra Reviewed

    Mizumachi M., Otani R.

    INTER-NOISE 2018 - 47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering   2018.01

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  • What is speech intelligibility? Reviewed

    Mizumachi M.

    25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling   6   3633 - 3636   2018.01

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  • Power saving audio playback algorithm based on auditory characteristics Reviewed

    Mizumachi M., Kubota W., Nakagawara M.

    144th Audio Engineering Society Convention 2018   2018.01

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  • Relationship among speech intelligibility and non-parametric distortion measures under various noise conditions Reviewed

    Paper ID: 1324   2017.08

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  • Non-linear broadband beamformer with deep neural network Reviewed

    Paper ID: 873   2017.07

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  • 音響・超音波研究がひらいた今日の生活と今後の展望

    水町 光徳

    電子情報通信学会誌 ( 電子情報通信学会 )   100 ( 6 )   419 - 423   2017.06

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  • 加齢による聴力低下と発話変化の相互作用 Invited Reviewed

    水町 光徳

    日本音響学会誌   73 ( 5 )   297 - 302   2017.05

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  • Discussion on Subjective Characteristics of High Resolution Audio Reviewed

    EB02-07   2017.05

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  • Relationship among speech intelligibility and non - Parametric distortion measures under various noise conditions Reviewed

    Mizumachi M., Moriyama Y.

    INTER-NOISE 2017 - 46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet   2017-January   2017.01

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  • Non-linear broadband beamformer with deep neural network Reviewed

    Mizumachi M., Origuchi M., Nishijima Y.

    24th International Congress on Sound and Vibration, ICSV 2017   2017.01

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    Speech enhancement is indispensable for human-to-machine speech interfaces, because speech signals are extremely fragile against acoustical interferences. Spatial filtering, that is, beamforming, is one of the popular solutions using multiple microphones. In the case of linear beamformers, a number of microphones are required to make the main lobe sharp at the desired direction. On the other hand, non-linear beamformers efficiently form the sharp main lobe compared with the linear beamformers. Kobatake et al. proposed a pioneering non-linear beamformer with a neural network. This method considered the narrowband optimization of the network structure, and succeeded in both achieving a sharper main lobe and decreasing grating lobes. Narrowband nonlinear beamformers have been steadily developed in the field of antenna and propagation. In this paper, a non-linear broadband beamformer with a deep neural network is proposed for speech enhancement. The proposed beamformer substitute a deep neural network for a conventional neural network, and non-equally-spaced microphone arrangement is employed for making grating lobes disappear. It is confirmed that the proposed beamformer can achieve ideal beam-pattern under a real environment.

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  • Interaction between hearing loss and changes in articulation due to aging Invited Reviewed

    Mizumachi Mitsunori

    THE JOURNAL OF THE ACOUSTICAL SOCIETY OF JAPAN ( Acoustical Society of Japan )   73 ( 5 )   297 - 302   2017.01

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    DOI: 10.20697/jasj.73.5_297

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    CiNii Research

  • Advanced delay-and-sum beamformer with deep neural network Reviewed

    Paper ID: 696   2016.09

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  • Speech intelligibility under in-car distant-talking environments Reviewed

    Mizumachi M., Takuma S., Ohsugi I., Hamada Y., Nishi K.

    Proceedings of the INTER-NOISE 2016 - 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future   389 - 393   2016.08

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  • Speech intelligibility under in-car distant-talking environments Reviewed

    Proc. Inter-noise   Paper ID: 408   2016.08

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  • Perceptual restoration of intermittent speech using human speech-like noise Reviewed

    Proc. 23rd International Congress on Sound and Vibration (ICSV23)   Paper ID: 1050   2016.07

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  • Subjective evaluation of high resolution audio through headphones Reviewed

    M. Mizumachi, R. Yamamoto, and K. Niyada

    Paper No. 9529   2016.06

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  • Singing support system using LPC residual wave for laryngectomee Reviewed

    Himeno T., Tanaka Y., Mizumachi M., Matsui K.

    2016 IEEE International Conference on Consumer Electronics, ICCE 2016   395 - 396   2016.03

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    DOI: 10.1109/ICCE.2016.7430662

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  • Perceptual restoration of intermittent speech using human speech-like noise Reviewed

    Mizumachi M., Imanaga S., Horiuchi T.

    ICSV 2016 - 23rd International Congress on Sound and Vibration: From Ancient to Modern Acoustics   2016.01

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    Mobile phones have caused an explosive increase in packet distribution. It causes a serious problem, that is, packet loss. Packet loss concealment is indispensable for achieving smooth speech communication. As a packet loss concealment method on a client side, a waveform substitution is popular and standardized by ITU. The ITU-T G. 711 conceals packet loss by inserting a phase-adjusted amplitude-attenuating previous packet into each break, but cannot deal with long-term breaks over 60 ms, that is, burst loss. The authors have previously proposed an alternative packet loss concealment relying on a human auditory capability. This method does not aim at restoring a waveform of the intermittent speech signal, but achieves perceptual restoration relying on phonetic restoration. When a gap of a intermittent speech signal is filled up with a loud arbitrary signal, we can smoothly listen to restored speech even if some segments of the original speech signal are completely lost. There is a trade-off between smoothness of the restored speech and noisiness of the gap-filling signal. Previously, the gap-filling signal was composed of a harmonic complex and ambient noises. In this paper, a human speech-like noise is substituted for the gap-filling signal. The speech-like noise can be prepared by repeatedly overlapping short-term human speech signals. It is confirmed that the proposed gap-filling signal succeeds in reducing its noisiness.

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  • Subjective evaluation of high resolution audio through headphones Reviewed

    Mizumachi M., Yamamoto R., Niyada K.

    140th Audio Engineering Society International Convention 2016, AES 2016   2016.01

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  • The Sound Quality Improvement by Removal Phonological for Singing System Based on LPC Residual Wave Reviewed

    Himeno Takashi, Tanaka Yuto, Mizumachi Mitsunori, Matsui Kenji, Nakatoh Yoshihisa

    The Japanese Journal of the Institute of Industrial Applications Engineers ( The Institute of Industrial Applications Engineers )   4 ( 1 )   19 - 25   2016.01

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    We propose a singing system to transmit the pseudo-vocal sound source into the vocal tract. In this paper, we examine the pseudo-vocal sound source that is suitable for singing system. So we carried out a comparison of LPC residual wave and Bark-LPC residual wave that the phonological component included in pseudo-vocal sound source was removed by Bark spectrum. As a result, we found that although the singing voice using Bark-LPC residual is in the low natural tendencies, the Bark-LPC residual wave can reproduce a higher speaker information contributed by the speaker characteristics.

    DOI: 10.12792/jjiiae.004.01.04

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  • Study on the improvement of intelligibility for elderly speech using formant frequency shift method Reviewed

    Tanaka Y., Mizumachi M., Nakatoh Y.

    Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)   9811 LNCS   683 - 690   2016.01

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    DOI: 10.1007/978-3-319-43958-7_83

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  • Acoustical Sensing of Approaching Vehicle by Non-Linear Filtering Reviewed

    2015.12

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  • Design of elder-friendly auditory signals for microwave ovens Reviewed

    Kadota N., Mizumachi M., Nakatoh Y.

    2015 4th International Conference on Informatics, Electronics and Vision, ICIEV 2015   2015.11

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    © 2015 IEEE. Recent house electrical appliances generate a number of auditory signals, when a user operates an appliance or an appliance draws attention to a user. In this paper, we focus on multi-functional microwave ovens, which commonly have several auditory signals for user's operation, error occurrence, completion of cooking, and so on. A wide variety of auditory signals for current microwave ovens have two problems: it is difficult for users to image what the auditory signals inform, and the auditory signals including high frequency components are not friendly for elderly users. In this paper, popular auditory signals for microwave ovens were subjectively evaluated with/without an elderly-simulated band-pass filter, which simulated an averaged audiogram of elder people, on the five grade scales of easiness of perception, unpleasantness, and emergency. Experimental results suggest that young and elderly people might imagine different function for a single auditory signal. Finally, suitable auditory signals both for young and elderly users are proposed in the viewpoints of frequency and temporal patterns.

    DOI: 10.1109/ICIEV.2015.7333977

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  • Perceptual restoration of intermittent speech under noisy environments Reviewed

    2015.07

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  • Subjective evaluation of high resolution audio under in-car listening environments Reviewed

    Mizumachi M., Yamamoto R., Niyada K.

    138th Audio Engineering Society Convention 2015   1   60 - 64   2015.01

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  • Development of Utterance Support System using Word Input Reviewed

    Hamai Yuya, Mizumachi Mitsunori, Nakatoh Yoshihisa, Matsui Kenji

    The Japanese Journal of the Institute of Industrial Applications Engineers ( The Institute of Industrial Applications Engineers )   3 ( 1 )   10 - 17   2015.01

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    Utterance is very important for us to communicate with others. However, many people have speech handicaps and can't produce utterance smoothly. They mainly rely on writing and sign language for communication. But they are not easy skills for them to master. In order to help them, we developed a new utterance support system which can function through an information terminal. We made predictions which includes two additional functions of fixed phrase dictionary and the class 2-gram – one of the statistical approaches for processing natural language. Fixed phrase dictionary includes phrases often used in our daily life conversations and class 2-gram uses co-occurrence frequencies of parts of speech in Japanese. There are two purposes for us to use class 2-gram, one is to generate next candidates and the other is to change frequency. We concluded two evaluation experiments. The results show that our system needs less numbers of inputs in helping with written utterance production and using our prototype permits us to input more characters in one minute than using iPhone IME. Hereafter, we intend to create more effective dictionaries and develop new GUI to make our system more effective and faster.

    DOI: 10.12792/jjiiae.003.01.02

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  • Aging effect on frequency characteristics of word utterances

    OGATA Kazuto, MIZUMACHI Mitsunori, NAKATOH Yoshihisa

    IEICE technical report. Welfare Information technology ( The Institute of Electronics, Information and Communication Engineers )   114 ( 261 )   49 - 54   2014.10

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    Advanced nations including Japan are facing aging societies. Aging decreases the ability in speech communication. In this paper, aging effect on speech is investigated in the viewpoint of static characteristics. Japanese words uttered by 21 elderly speakers, of which ages range from 64 years old to 87 years old, are used for calculating their power spectra. Concerning Japanese five vowels, the power spectra are calculated only using the initial phonemes of the words. The power spectra for elderly speakers decrease in the frequency range between 2.5 kHz and 4.5 kHz, and increase in higher frequency range over 4.5 kHz.

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  • Robust Sensing of Approaching Vehicles Relying on Acoustic Cue Reviewed

    M. Mizumachi, A. Kaminuma, N. Ono, and S. Ando

    Proc. IEEE IS3C2014   Paper No. 265   2014.06

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    DOI: 10.1109/IS3C.2014.144

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  • Robust Sensing of Approaching Vehicles Relying on Acoustic Cue Reviewed

    Sensors   14 ( 6 )   9546 - 9561   2014.05

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    DOI: 10.3390/s140609546

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  • Applicability of perceptual evaluation of speech quality in evaluating heavily distorted speech Reviewed

    224 - 229   2014.01

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  • Perceptual restoration of intermittent speech relying on illusory continuity Reviewed

    Mizumachi M., Motomura S., Takakura T., Horiuchi T.

    Proceedings of Forum Acusticum   2014-January   2014.01

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    A digital communication network makes our daily lives comfortable. It, however, causes a serious problem in speech communication due to a packet loss, which yields intermittent speech after decoding the packets. Packet loss concealment (PLC) is indispensable to achieve smooth speech communication over a digital network. There are various kinds of PLC methods based on wave substitution and feature prediction. Those methods aim to achieve intact restoration of a speech waveform. The ITU-T Recommendation G.711 offers a standard PLC method, but cannot conceal the packet loss, of which lost duration exceeds 60 ms. Then, G.711 PLC method is not enough to cope with the actual packet loss problem. On the other hand, the authors have proposed a perceptual restoration scheme of intermittent speech. We can listen to intermittent speech smoothly, when its gap is filled out with a loud, wide-band noise such as a white noise. This is an auditory illusion called illusory continuity, and is explained as the environmental adaptability of the human brain. In order to employ the illusory continuity for PLC, it is necessary to decrease the harshness of the loud gap-filling noise. A speech-like gap-filling signal is prepared with a mixture of less-harsh environmental noises in advance. Both dynamic and static properties of speech are incorporated into the proposed gap-filling signal. The feasibility of the proposed PLC method was examined by a listening test. Participants gave five-grade mean opinion scores on the smoothness of the restored speech, noisiness of the gap-filling signal, and the easiness of speech perception. It is confirmed that the proposed method has a significant advantage over the G.711 PLC method under long-term packet loss conditions.

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  • Interaction between hearing and speaking by aging

    MIZUMACHI Mitsunori

    IEICE technical report. Welfare Information technology ( The Institute of Electronics, Information and Communication Engineers )   113 ( 272 )   61 - 66   2013.10

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    A rapid increase of aged population is one of the social problem. In the aging society, it is difficult for the elderly to establish smooth speech communication. It causes a serious problem in a daily life, because it prevents the elderly from leading a healthy life. Hearing loss is an ordinary phenomenon for the elderly over 70 years old, although they have no subjective symptoms. The hearing loss by aging gradually occurs even in younger generation, and is remarkably confirmed in the high frequency region. The high-frequency hearing loss seriously decreases our ability in hearing consonants of words and sound source separation in noisy environments. Concerning the ability of speech perception, it is possible to roughly estimate the speaker's age, when someone speaks. It suggests that we know some important features, which characterize the elderly speakers, consciously and unconsciously. It has been reported that hoarseness is one of the most important characteristics of the elderly voice. The author has already confirmed that the subjective hoarseness could be caused by the energy lift in the high frequency region. Almost all previous works deal with the problems of the hearing loss by aging and the acoustical deformation of utterance by the elderly individually and independently. In this paper, interaction between hearing and speaking by aging is considered based on the concept of "speech chain."

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  • Speech enhancement by non-linear beamforming tolerant to misalignment of target source direction Reviewed

    Journal of the Institute of Industrial Applications Engineers   1 ( 2 )   97 - 104   2013.10

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  • Investigation on objective quality evaluation for heavily distorted speech Reviewed

    668 - 672   2013.09

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  • How do we perceive noisy and noise-reduced speech? Reviewed

    2013.09

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  • Restoration of intermittent speech based on human auditory capability and temporal characteristics of speech Reviewed

    2013.07

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  • Relationship Between Subjective and Objective Evaluation of Noise-reduced Speech With Various Widths of Temporal Windows Reviewed

    M. Mizumachi

    Proc. 21st International Congress on Acoustics   Paper ID: 1aSCb13   2013.06

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    DOI: 10.1121/1.4799431

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  • Investigation on objective quality evaluation for heavily distorted speech Reviewed

    M. Mizumachi

    Proc. AES 134th Convention   CD-ROM (Paper ID: 8830)   2013.05

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  • How do we perceive noisy and noise-reduced speech? Reviewed

    6   4818 - 4823   2013.01

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  • Evaluation of Sound Quality of High Resolution Audio Reviewed

    Yamamoto Ryuta, Kanetada Naoto, Mizumachi Mitsunori

    The Japanese Journal of the Institute of Industrial Applications Engineers ( The Institute of Industrial Applications Engineers )   1 ( 2 )   52 - 57   2013.01

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    In this paper, sound quality of high resolution audio (HRA) is investigated in the view point of auditory perception. Perceptual characteristics of HRA have been examined by listening tests compared with the standard audio CD and the compressed MPEG audio layer-3 (MP3) qualities. The listening tests were carried out by the paired comparison, and the participants were asked to discriminate among HRA, CD, and MP3. Jazz music was selected out as the original HRA. Both CD and MP3 quality audio files were prepared from the original HRA file by the authors. It is found that the participants prefer the audio format with richer information, that is, HRA is most desirable and CD is better than MP3. The questionnaires filled in by participants indicate that subjective characteristics of HRA include much presence, high spatial clarity, and wide spaciousness. Additionally, perceptual discrimination in quantization distortion is also focused on in between 16 bits and 24 bits resolution. As the result of the listening test with 28 participants, the difference of the quantization resolution was discriminated with the accuracy of 60.3 %. Concerning the perceptual discrimination of HRA, quantization resolution is an important factor as well as its wide frequency range.

    DOI: 10.12792/jjiiae.001.02.003

    Kyutacar

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  • Restoration of intermittent speech based on human auditory capability and temporal characteristics of speech Reviewed

    Mizumachi M., Motomura S., Takakura T., Horiuchi T.

    20th International Congress on Sound and Vibration 2013, ICSV 2013   3   1896 - 1902   2013.01

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    Recently, a new obstruction to speech communication, that is, the short-term intermittence of the speech signal, is occurred due to the congestion in the digital communication network. Mobile phones and smart phones have spread rapidly, and then the communication lines are occupied by the heavy traffic of the received/transmitted packets. Therefore, the packet associated with speech can also be lost in the congested communication line. It is not advisable to require the re-transmission of the lost packet in speech communication, because the re-transmission of the lost packet disturbs smooth speech communication and causes the further traffic in the communication line. The restoration of the intermittent speech should be completed on the user's client equipment. The copy of the previous packet should be the easiest approach in restoring the intermittent speech, although the restored speech must be perceived slowly and lazily. The authors have proposed a novel approach to the restoration of the intermittent speech relying on the human auditory capability [Proc. ICSV19, 2012]. This is not an exact physical restoration of the intermittent speech signal, but a perceptual restoration. When the gap of the intermittent speech signal is filled up with an extremely noisy noise signal, we can listen to the intermittent speech smoothly even if some segments of the original speech signal are lost completely. The authors have proposed a practical scheme of the restoration based on our phonemic restoration capabilities. The previously proposed method has employed the less harsh noise and the speech-like harmonic component designed in the frequency domain as the gap-filling signal. Furthermore, in this paper, the temporal characteristics of speech are introduced into the gap-filling signal. It is confirmed that the amplitude modulation and the temporal decay in the gap-filling signal improve the auditory impression of the restored speech signals.

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  • Relationship between subjective and objective evaluation of noisereduced speech based on temporal variation of speech distortion Reviewed

    1   109 - 117   2012.12

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  • Relationship between subjective and objective evaluation of noise-reduced speech based on temporal fluctuation of speech distortion Reviewed

    M. Mizumachi

    Proc. Inter-noise   CD-ROM (Paper ID: 808)   2012.08

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  • Versatile beamforming for speech enhancement in non-stationary acoustic environments Reviewed

    311 - 316   2011.12

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  • Speech enhancement with adaptive integration between spatial and spectral filtering Reviewed

    2   1432 - 1437   2011.12

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  • Relationship between subjective and objective evaluation of distorted speech Reviewed

    1   351 - 356   2011.12

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  • Relationship between subjective and objective evaluation of distorted speech Reviewed

    Mitsunori Mizumachi

    Proc. AES 131st Convention   2011.10

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  • Speech enhancement with adaptive integration between spatial and spectral filtering Invited Reviewed

    Mitsunori Mizumachi

    Proc. Inter-noise   2011.09

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  • Versatile beamforming for speech enhancement in non-stationary acoustic environments Reviewed

    Mitsunori Mizumachi

    Proc. Forum Acusticum   2011.06

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  • Statistical confidence measure for direction-of-arrival estimate Reviewed

    666 - 670   2010.12

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  • Speech enhancement based on spatial and acoustical features in non-stationary noisy environments Reviewed

    5   3603 - 3608   2010.12

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  • Self-organized approach to noise reduction based on acoustic and spatial features Reviewed

    7   5645 - 5652   2010.12

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  • Confidence measure based on higher-order statistics for spatial feature in particle filtering Reviewed

    2010.12

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  • Adaptive source separation based on reliability of spatial feature using multi-channel acoustic observations Reviewed

    2   1092 - 1098   2010.12

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  • Confidence measure based on higher-order statistics for spatial feature in particle filtering Reviewed

    Mitsunori Mizumachi

    Proc. 2010 International Forum on Multimedia and Image Processing (IFMIP 2010)   2010.09

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  • Statistical confidence measure for direction-of-arrival estimate Reviewed

    Mitsunori Mizumachi

    Proc. 18th European Signal Processing Conference (EUSIPCO2010)   666 - 670   2010.08

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  • Speech enhancement based on spatial and acoustical features in non-stationary noisy environments Reviewed

    Proc. 17th International Congress on Sound and Vibration (ICSV17)   2010.07

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    2010.07  -  2010.07

  • Self-organized approach to noise reduction based on acoustic and spatial features Reviewed

    Proc. 39th International Congress and Exposition on Noise Control Engineering (INTER-NOISE 2010)   2010.06

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    2010.06  -  2010.06

  • Adaptive source separation based on reliability of spatial feature using multi-channel acoustic observations Reviewed

    Proc. AES 128th Convention in London   2010.05

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    2010.05  -  2010.05

  • Acoustic analysis of breathy and rough voice characterizing elderly speech Reviewed

    T. Miyazaki,M. Mizumachi,and K. Niyada

    Journal of Advanced Computational Intelligence and Intelligent Informatics   14 ( 2 )   135 - 141   2010.03

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  • Robust Estimation of Sound Source Direction with Deterministic Background Noise and Stochastic Source Dynamics Models Reviewed

    M. Mizumachi,and K. Niyada

    Journal of Advanced Computational Intelligence and Intelligent Informatics   14 ( 2 )   208 - 213   2010.03

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  • Analysis of ill-articulated speech by elderly speakers based on temporal transition of amplitude spectrum Reviewed

    D. Harada,K. Hamasaki,T. Miyazaki,M. Mizumachi,and K. Niyada

    Proc. 2010 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing   PaperID: 40   2010.03

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    2010.03  -  2010.03

  • Relationship among subjective impressions and room acoustic parameters for musical signals in large-scale sound field Reviewed

    M. Nakagawara,T. Nakano,M. Mizumachi,and K. Niyada

    Proc. 2010 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing   PaperID: 82   2010.03

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    2010.03  -  2010.03

  • Adaptive direction-of-arrival estimation using microphone array Reviewed

    Proc. 10th Western Pacific Acoustics Conference (WESPAC-X)   2009.09

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    2009.09  -  2009.09

  • Flexible beamforming for speech enhancement using stochastic spatial information Reviewed

    Proc. 16th International Congress on Sound and Vibration (ICSV16)   2009.07

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    2009.07  -  2009.07

  • Study on relationship among preference and subjective spatial impressions using multiple regression analysis Reviewed

    M. Nakagawara,M. Mizumachi,and K. Niyada

    Proc. AES 14th Regional Convention   P1-1   2009.07

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    2009.07  -  2009.07

  • Robust noise reduction by optimized beamforming based on spatial features Reviewed

    Proc. AES 126th Convention   P10-5   2009.05

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    2009.05  -  2009.05

  • Investigation on acoustic feature to characterize ill-articulated voice uttered by elderly people Reviewed

    K. Hamasaki,T. Miyazaki,M. Mizumachi,and K. Niyada

    Proc. 2009 RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP'09)   53 - 56   2009.03

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    2009.03  -  2009.03

  • Spatial and acoustic feature extraction in time-variant acoustic environments Reviewed

    Proc. 2009 RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP'09)   41 - 44   2009.03

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    2009.03  -  2009.03

  • Investigation on the difference of room impulse responses using multi-dimensional scaling - comparison among a traditional theater of Japan, an auditorium and a concert hall - Reviewed

    Y. Hamamura,M. Nakagawara,T. Saruwatari,M. Mizumachi,and K. Niyada

    Proc. Youngnam-Kyushu Joint Conference on Acoustics 2009   CD-ROM   2009.02

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    2009.02  -  2009.02

  • The relationship between hoarseness and acoustic features for characterizing elderly speech Reviewed

    T. Miyazaki,M. Nishi,M. Mizumachi,and K. Niyada

    Proc. Youngnam-Kyushu Joint Conference on Acoustics 2009   CD-ROM   2009.02

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    2009.02  -  2009.02

  • Relationship among preference and subjective spatial impressions in large-scale space Reviewed

    M. Nakagawara,Y. Hamamura,T. Saruwatari,M. Mizumachi,and K. Niyada

    Proc. Youngnam-Kyushu Joint Conference on Acoustics 2009   CD-ROM   2009.02

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    2009.02  -  2009.02

  • Robust direction-of-arrival estimation by particle filtering with confidence measure based on effective sample size under noisy environments Reviewed

    M. Mizumachi,K. Niyada

    Proc. Joint 4th International Conference on Soft Computing and Intelligent Systems and 9th International Symposium on advanced Intelligent Systems (SCIS & ISIS 2008)   CD-ROM   2008.09

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    2008.09  -  2008.09

  • Relationship between Room Acoustic Parameters and Auditory Impression Based on Binaural Hearing Reviewed

    M. Nakagawara,Y. Hamamura,M. Mizumachi,and K. Niyada

    Proc. AES Japan Conference   CD-ROM   2008.07

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    2008.07  -  2008.07

  • Design of non-equally-spaced linear microphone arrangement for speech enhancement Reviewed

    M. Mizumachi,S. Yoshikuni,K. Niyada

    Proc. RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP2008)   236 - 239   2008.03

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    2008.03  -  2008.03

  • Smart Noise Reduction Based on Reliability of Direction-of-arrival Estimate Reviewed

    Proc. NAG-DAGA International Conference on Acoustics   CD-ROM   2008.03

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    2008.03  -  2008.03

  • Synergic integration of noise reduction and DOA estimation with stochastic target sound source and deterministic noise models Reviewed

    M. Mizumachi,K. Niyada

    Proc. 19th International Congress on Acoustics (ICA2007)   ELE - 03-012   2007.09

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    2007.09  -  2007.09

  • DOA estimation with hybrid modeling of stochastic dynamics of target sound source and deterministic environmental characteristics for mobile applications Reviewed

    M. Mizumachi,K. Niyada

    Proc. Biennial on DSP for in-Vehicle and Mobile Systems   TM-3   2007.06

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    2007.06  -  2007.06

  • Acoustic analysis of hoarse voice and its application to elderly speech recognition Reviewed

    M. Watanabe,T. Miyazaki,M. Mizumachi,and K. Niyada

    Proc. RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP2007)   401 - 404   2007.03

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    2007.03  -  2007.03

  • DOA Estimation based on Cross-correlation with Frequency Selectivity Reviewed

    Mitsunori Mizumachi,Katsuyuki Niyada

    Journal of Signal Processing   11 ( 1 )   43 - 49   2007.01

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  • DOA Estimation by Particle Filtering with Frequency Selectivity Reviewed

    M. Mizumachi,N. Ikoma

    Proc. Joint 3rd International Conference on Soft Computing and Intelligent Systems and 7th International Symposium on advanced Intelligent Systems (SCIS&ISIS2006)   2006.09

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    2006.09.20  -  2006.09.24

  • DOA estimation based on cross-correlation by two-step particle filtering Reviewed

    M. Mizumachi,N. Ikoma,K. Niyada

    Proc. 14th European Signal Processing Conference (EUSIPCO2006)   2006.09

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    2006.09.04  -  2006.09.08

  • Acoustic analysis of hoarse voice and its application to elderly speech recognition Reviewed

    T. Mouri,T. Miyazaki,M. Mizumachi,K. Niyada

    Proc. RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP2006)   170 - 173   2006.03

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    2006.03  -  2006.03

  • DOA Estimation based on Cross-correlation Approach with Frequency Selectivity Reviewed

    M. Mizumachi,M. Yuji,K. Niyada

    Proc. RISP International Workshop on Nonlinear Circuits and Signal Processing (NCSP2006)   1 - 4   2006.03

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    2006.03  -  2006.03

  • Estimation of Active Speaker's Direction Using Particle Filtering Reviewed

    M. Mizumachi,K. Niyada

    Proc. Biennial on DSP for In-Vehicle and Mobile Systems   CD-ROM   2005.09

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    2005.09  -  2005.09

  • Passive hybrid subtractive beamformer for near-field sound sources Reviewed

    M. Mizumachi,S. Nakamura

    Acoustic Science and Technology   26 ( 6 )   495 - 501   2005.04

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  • AURORA-2J: An Evaluation Framework for Japanese Noisy Speech Recognition Reviewed

    S. Nakamura,K. Takeda,K. Yamamoto,T. Yamada,S. Kuroiwa,N. Kitaoka,T. Nishiura,A. Sasou,M. Mizumachi,C.i Miyajima,M. Fujimoto,and T.Endo

    IEICE Trans. Information and Systems (E)   E88-D ( 3 )   535 - 544   2005.04

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  • CENSREC-3: An Evaluation Framework for Japanese Speech Recognition in Real Driving Car Environments Reviewed

    M. Fujimoto,S. Nakamura,K. Takeda,S. Kuroiwa,T. Yamada,N. Kitaoka,K. Yamamoto,M. Mizumachi,T. Nishiura,A. Sasou,C .Miyajima,T. Endo

    Proc. International Workshop on Realworld Multimedia Corpora in Mobile Environment (RWCinME2005)   53 - 60   2005.04

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    2005.04  -  2005.04

  • DOA estimation using cross-correlation with particle filter Reviewed

    M. Mizumachi,K. Niyada

    Proc. Joint Workshop on Hands-Free Speech Communication and Microphone Arrays (HSCMA2005)   CD-ROM   2005.03

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    2005.03  -  2005.03

  • AURORA-2J: Japanese speech data collection for performance evaluation of speech recognition in noise Reviewed

    S. Nakamura,K. Yamamoto,K. Takeda,S. Kuroiwa,N. Kitaoka,T. Yamada,M. Mizumachi,T. Nishiura,M. Fujimoto,A. Sasou,and T. Endo

    Proc. International Conference on Speech and Language Technology (ICSLT2004/O-COCOSDA2004)   CD-ROM   2004.11

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    2004.11  -  2004.11

  • Passive subtractive beamformer for near-field sound sources Reviewed

    M. Mizumachi,S. Nakamura

    Proc. IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM2004)   74 - 78   2004.07

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    2004.07  -  2004.07

  • Iterative Compensation of Microphone Array and Sound Source Movements Based on Minimization of Arrival Time Differences Reviewed

    T. Horiuchi,M. Mizumachi,and S. Nakamura

    Proc. IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM2004)   566 - 570   2004.07

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    2004.07  -  2004.07

  • Iterative Estimation and Compensation of Signal Direction for Moving Sound Source by Mobile Microphone Array Reviewed

    T. Horiuchi,M. Mizumachi,and S. Nakamura

    IEICE Trans. Fundamentals   E87-A ( 11 )   2950 - 2956   2004.04

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  • Data collection and evaluation of AURORA-2 Japanese corpus Reviewed

    S. Nakamura,K. Yamamoto,K. Takeda,S. Kuroiwa,N. Kitaoka,T. Yamada,M. Mizumachi,T. Nishiura,M. Fujimoto,A. Saso,T. Endo

    Proc. IEEE Workshop on Automatic Speech Recognition and Understanding (ASRU2003)   619 - 623   2003.12

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    2003.12  -  2003.12

  • Noise reduction using paired-microphones on non-equally-spaced microphone Arrangement Reviewed

    M. Mizumachi,S. Nakamura

    Proc. 8th European Conf. on Speech Communication and Technology (EUROSPEECH2003)   1   585 - 588   2003.09

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    2003.09  -  2003.09

  • Integration of noise reduction algorithms for AURORA2 task Reviewed

    T. Yamada,J. Okada,K. Takeda,N. Kitaoka,M. Fujimoto,S. Kuroiwa,K. Yamamoto,T. Nishiura,M. Mizumachi,and S. Nakamura

    Proc. 8th European Conf. on Speech Communication and Technology (EUROSPEECH2003)   3   1769 - 1772   2003.09

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    2003.09  -  2003.09

  • 雑音環境下での音声認識システム

    葦苅豊,水町光徳,實廣貴敏,中村哲

    月刊バーコード   16 ( 7 )   35 - 39   2003.06

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  • An iterative compensation algorithm of coordinate systems for a mobile microphone array Reviewed

    T. Horiuchi,M. Mizumachi,and S. Nakamura

    Proc. 5th Intl. Workshop on Microphone Array Systems   CD-ROM   2003.05

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    2003.05  -  2003.05

  • The 2ch hybrid subtractive beamformer applied to line sound sources Reviewed

    M. Mizumachi,S. Nakamura

    Proc. Intl. Conf. On Spoken Language Processing (ICSLP2002)   3   1833 - 1836   2002.09

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    2002.09  -  2002.09

  • Noise reduction using paired-microphones for both far-field and near-field sound sources Reviewed

    M. Mizumachi,S. Nakamura

    Proc. 7th European Conf. on Speech Communication and Technology (EUROSPEECH2001)   4   2607 - 2610   2001.09

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    2001.09  -  2001.09

  • Noise reduction with the subtractive beamformer for mobile speech recognition Reviewed

    M. Mizumachi,S. Nakamura

    Proc. Intl. Conf. on Speech Processing (ICSP2001)   2   673 - 678   2001.08

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    2001.08  -  2001.08

  • Robust MFCCs derived from differentiated power spectrum Reviewed

    J. Chen,K. K. Paliwal,M. Mizumachi,and S. Nakamura

    Proc. Intl. Conf. on Speech Processing (ICSP2001)   2   577 - 582   2001.08

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    2001.08  -  2001.08

  • ハンズフリー音声通信に関する国際会議(HSC2001) を開催

    水町 光徳

    ATRジャーナル   44   11 - 11   2001.08

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  • Subtractive beamformer based on paired-microphones for near-field sound sources Reviewed

    M. Mizumachi,S. Nakamura

    Proc. Intl. Workshop on Hands-Free Speech Communication (HSC 2001)   79 - 82   2001.04

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    2001.04  -  2001.04

  • マイクロホンアレーを用いた雑音に頑健な音声認識-音を聞き分ける音声認識を目指して-

    西浦敬信,水町光徳,中村哲

    ATRジャーナル   42   16 - 17   2001.02

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  • TSP信号を用いた室内伝達特性の測定

    青木淳,水町光徳

    ATR Technical Report   TR-S-0016   2001.02

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  • Noise reduction using a small-scale microphone array under non-stationary signal conditions Reviewed

    M. Mizumachi,M. Akagi

    Proc. 7th Western Pacific Regional Acoustic Conference (WESTPRAC VII)   1   421 - 424   2000.10

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    2000.10  -  2000.10

  • Design of robust subtractive beamformer for noisy speech recognition Reviewed

    M. Mizumachi,M. Akagi,and S. Nakamura

    Proc. Intl. Conf. On Spoken Language Processing (ICSLP2000)   4   57 - 60   2000.10

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    2000.10  -  2000.10

  • The auditory-oriented spectral distortion for evaluating speech signals distorted by additive noises Reviewed

    M. Mizumachi,M. Akagi

    J. Acoust. Soc. Jpn. (E)   21 ( 5 )   251 - 258   2000.04

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  • An objective distortion estimator for hearing aids and its application to noise reduction Reviewed

    M. Mizumachi,M. Akagi

    Proc. 6th European Conf. on Speech Communication and Technology (EUROSPEECH1999)   6   2619 - 2622   1999.09

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    1999.09  -  1999.09

  • Noise reduction method that is equipped for a robust direction finder in adverse environments Reviewed

    M. Mizumachi,M. Akagi

    Proc. IEEE Workshop on Robust Methods for Speech Recognition in Adverse Conditions (ROBUST1999)   179 - 182   1999.05

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    1999.05  -  1999.05

  • マイクロホン対を用いたスペクトルサブトラクションによる雑音除去法 Reviewed

    水町光徳,赤木正人

    電子情報通信学会論文誌A   82-A ( 4 )   502 - 512   1999.04

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  • Noise reduction by paired-microphones using spectral subtraction Reviewed

    M. Mizumachi,M. Akagi

    Proc. Intl. Conf. on Acoustics, Speech, and Signal Processing (ICASSP1998)   2   1001 - 1004   1998.05

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    1998.05  -  1998.05

  • Noise reduction by paired microphones Reviewed

    M. Akagi,M. Mizumachi

    Proc. 5th European Conf. on Speech Communication and Technology (EUROSPEECH1997)   1   335 - 338   1997.09

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    1997.09  -  1997.09

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Publications (Books)

  • 音響キーワードブック

    日本音響学会 編(Joint author ,  音環境理解)

    コロナ社  2016.03  ( ISBN:978-4-339-00880-7

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Conference Prsentations (Oral, Poster)

  • 音楽およびさまざまな音響コンテンツを用いた音響システム計測用ツールの試作について

    河原 英紀, 矢田部 浩平, 榊原 健一,水町 光徳, 北村 達也, 坂野 秀樹

    応用/電気音響研究会 

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    Event date: 2022.03   Language:Japanese  

  • 公共空間の音声明瞭度を改善するEGG解析に基づく話者指標の検討

    小松悠人, 程島奈緒, 榊原健一, 水町 光徳

    日本音響学会2022年春季研究発表会 

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    Event date: 2022.03   Language:Japanese  

  • LSTMネットワークを用いた非線形ビームフォーマの検討

    荒瀬 新史, 水町 光徳

    日本音響学会2022年春季研究発表会 

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    Event date: 2022.03   Language:Japanese  

  • チャネル間振幅差と位相差のハイブリッド操作に基づくステレオ音像幅縮退方式の提案

    上野 裕生, 水町 光徳, 堀内 俊治

    応用/電気音響研究会 

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    Event date: 2021.12   Language:Japanese  

  • ヘッドホン受聴に適したステレオ音源再生方式の特徴について

    上野 裕生, 水町 光徳, 堀内 俊治

    若手・学生のためのAESジャパンフォーラム 

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    Event date: 2021.11   Language:Japanese  

  • 屋外施設を対象とする音響データ収集システムにおける無線LAN通信特性評価,

    髙野千愛, 藤野慎也, 野林大起, 塚本和也, 水町光徳, 池永全志

    電子情報通信学会ソサイエティ大会 

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    Event date: 2021.09   Language:Japanese  

  • 音響データ収集システムでの音響特徴に基づいた通信データ量削減方法に関する研究

    藤野慎也, 髙野千愛, 水町光徳, 池永全志, 塚本和也, 野林大起

    電子情報通信学会ソサイエティ大会 

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    Event date: 2021.09   Language:Japanese  

  • ヴァーチャル観測信号を用いたニューラルネットワークビームフォーマの指向特性先鋭化

    金清 祐紀, 水町 光徳, 宮崎 亮一

    日本音響学会2021年春季研究発表会 

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    Event date: 2021.03.10 - 2021.03.12   Language:Japanese  

  • 音声資料の収録・再生環境の簡易な把握に向けて:オールパスフィルタの従属接続に基づく拡張された時間伸長パルスの応用

    河原 英紀, 矢田部 浩平, 榊原 健一,水町 光徳, 森勢 将雅, 坂野 秀樹, 入野 俊夫

    日本音響学会2021年春季研究発表会 

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    Event date: 2021.03.10 - 2021.03.12   Language:Japanese  

  • ヘッドホン受聴によるステレオ音像幅縮退アルゴリズムの主観的最適化

    上野 裕生, 水町 光徳, 堀内 俊治

    応用/電気音響研究会 

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    Event date: 2021.03.03 - 2021.03.04   Language:Japanese  

  • Versatile system analysis procedure based on a frequency domain variant of velvet noise,

    H. Kawahara, K. Sakakibara, M. Mizumachi, M. Morise, H. Banno

    The 179th Meeting of the Acoustical Society of America 

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    Event date: 2020.12.07 - 2020.12.11   Language:English  

  • 音声収集と聴取における対話的実時間音響計測ツールの応用について

    河原 英紀, 榊原 健一, 水町 光徳, 入野俊夫

    応用/電気音響研究会 

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    Event date: 2020.11.20   Language:Japanese  

  • バイノーラルレンダリングとステレオ音像幅制御の主観的特徴の比較

    上野 裕生, 水町 光徳, 堀内 俊治

    応用/電気音響研究会 

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    Event date: 2020.11.20   Language:Japanese  

  • 複数の音響センサノードによる機器異常検知システム

    髙野 千愛, 藤野 慎也, 野林 大起, 塚本 和也, 水町 光徳, 池永 全志

    電子情報通信学会ソサイエティ大会 

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    Event date: 2020.09   Language:Japanese  

  • 音声の収録条件が音声パラメタの分析に与える影響について

    河原 英紀, 榊原 健一,水町 光徳

    日本音響学会2020年秋季研究発表会 

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    Event date: 2020.09   Language:Japanese  

  • 音響インパルス応答の位相補償への滑らかな局所的位相操作関数の応用について

    河原 英紀, 榊原 健一, 水町 光徳, 森勢 将雅, 坂野 秀樹

    応用/電気音響研究会 

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    Event date: 2020.08   Language:Japanese  

  • 周波数領域ベルベットノイズを用いた音響計測の拡張 -4系列利用の効果と同時三次元位置計測への応用について-

    河原 英紀, 榊原 健一, 水町 光徳, 森勢 将雅, 坂野 秀樹

    応用/電気音響研究会 

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    Event date: 2020.07   Language:Japanese  

  • 周波数領域velvet noiseを用いた音響インパルス応答計測用試験信号の拡張について

    河原 英紀, 榊原 健一,水町 光徳

    日本音響学会2020年春季研究発表会 

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    Event date: 2020.03   Language:Japanese  

  • 周波数領域ベルベットノイズを用いた残響時間の実時間可視化の検討

    河原 英紀, 榊原 健一, 水町 光徳, 森勢 将雅, 坂野 秀樹

    応用/電気音響研究会 

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    Event date: 2020.03   Language:Japanese  

  • ヘッドホン再生のためのステレオ音源加工方法の空間印象評価

    上野 裕生, 水町 光徳, 堀内 俊治

    応用/電気音響研究会 

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    Event date: 2020.03   Language:Japanese  

  • 小型マイクロフォンアレイを用いた非線形ビームフォーマの性能評価

    岡 遼太郎, 水町 光徳

    応用/電気音響研究会 

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    Event date: 2019.12   Language:Japanese  

  • 省電力再生を目的とした音声加工が単語了解度へ及ぼす影響

    中嶋 司, 中川原 光洋, 水町 光徳

    応用/電気音響研究会 

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    Event date: 2019.12   Language:Japanese  

  • 音響システムの各種特性の計測における周波数領域velvet noiseの応用について

    河原 英紀, 榊原 健一, 水町 光徳, 森勢 将雅, 坂野 秀樹, 入野 俊夫

    応用/電気音響研究会 

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    Event date: 2019.10   Language:Japanese  

  • 音声の録音の基本手順と支援ツールについて

    榊原 健一,河原 英紀,水町 光徳

    日本音響学会2019年秋季研究発表会 

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    Event date: 2019.09   Language:Japanese  

  • 周波数領域velvet noiseを用いた音響計測手順の拡張について

    河原 英紀, 榊原 健一,水町 光徳

    応用/電気音響研究会 

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    Event date: 2019.07   Language:Japanese  

  • マスキング特性を考慮した省電力音響再生法の有用性検証

    中嶋 司, 中川原 光洋, 水町 光徳

    応用/電気音響研究会 

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    Event date: 2019.03   Language:Japanese  

  • スペクトル歪み評価関数と指向特性評価関数を用いた交互学習による非線形ビームフォーマ

    江口 航平, 水町 光徳

    日本音響学会2018年秋季研究発表会 

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    Event date: 2018.09   Language:Japanese  

  • 周波数領域velvet noiseとパワースペクトルの静的表現を用いた音響計測の可能性について

    河原 英紀, 森勢 将雅, 水町 光徳

    応用/電気音響研究会 

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    Event date: 2018.08   Language:Japanese  

  • 聴覚特性を考慮した省電力音響再生のための音源加工 ~ 騒音環境下での主観評価 ~

    中川原 光洋, 中嶋 司, 水町 光徳

    応用/電気音響研究会 

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    Event date: 2018.07   Language:Japanese  

  • 聴覚特性を考慮した省電力音響再生のための音源加工 ~ マスキング効果が音源加工に与える影響について ~

    中嶋 司, 中川原 光洋, 水町 光徳

    応用/電気音響研究会 

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    Event date: 2018.07   Language:Japanese  

  • 日本語母音発話の主観印象と母音空間パラメータの関係

    松本 遥, 水町 光徳, 榊原 健一

    応用/電気音響研究会 

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    Event date: 2018.03   Language:Japanese  

  • 信号劣化低減を目的とした広帯域非線形ビームフォーマの検討

    西嶋 祐哉, 水町 光徳

    応用/電気音響研究会 

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    Event date: 2018.02   Language:Japanese  

  • 母音発話の明瞭性とフォルマント周波数分布の関係

    松本 遥, 水町 光徳

    応用/電気音響研究会 

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    Event date: 2017.10   Language:Japanese  

  • ハイレゾ音源の知覚に対する再生環境の違いの影響

    山本 竜太, 二矢田 勝行, 水町 光徳

    日本音響学会2017年春季研究発表会 

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    Event date: 2017.03   Language:Japanese  

  • 聴覚特性を考慮した音源加工による省電力音源再生に関する検討

    中川原 光洋, 久保田 航, 水町 光徳

    日本音響学会2017年秋季研究発表会 

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    Event date: 2017.03   Language:Japanese  

  • ディープニューラルネットワークによる広帯域ビームフォーマの提案

    折口槙弥, 水町光徳

    日本音響学会2017年春季研究発表会 

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    Event date: 2017.03   Language:Japanese  

  • 音声明瞭度と物理的歪みの時間・周波数変動との関係

    森山 由美子, 水町 光徳

    応用/電気音響研究会 

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    Event date: 2017.01   Language:Japanese  

  • 高齢者音声の主観印象と音響的特徴に関する検討

    竹森 州平, 水町 光徳

    福祉情報工学研究会 

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    Event date: 2016.10   Language:Japanese  

  • ディープニューラルネットワークを用いた遅延和ビームフォーマの学習方法についての検討

    折口 槙弥, 水町 光徳

    応用/電気音響研究会 

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    Event date: 2016.07   Language:Japanese  

  • ディープニューラルネットワークを用いた遅延和ビームフォーマの最適化

    折口 槙弥, 水町 光徳

    応用/電気音響研究会 

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    Event date: 2016.03   Language:Japanese  

  • Individual interaction between hearing and speaking due to aging

    Mitsunori Mizumachi

    Meeting of the Acoustical Society of America 

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    Event date: 2015.11   Language:English  

  • 車室内における雑音の定常性と音声了解度の関係

    詫間翔大, 堀川智帆, 水町光徳

    日本音響学会2015年春季研究発表会  日本音響学会

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    Event date: 2015.03   Language:Japanese  

  • 騒音環境下における数字読み上げ音声の桁数と了解度の関係

    堀川智帆, 詫間翔大, 水町光徳

    日本音響学会2015年春季研究発表会  日本音響学会

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    Event date: 2015.03   Language:Japanese  

  • Change of Static Characteristics of Japanese Word Utterances with Aging

    Mitsunori Mizumachi

    Meeting of the Acoustical Society of America 

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    Event date: 2014.10   Language:English  

  • 加齢による聴覚と発話の相互作用

    水町光徳

    福祉情報工学研究会 

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    Event date: 2013.10   Language:Japanese  

  • 雑音除去音声聴取時の脳活動計測

    水町光徳

    日本音響学会春季研究発表会  日本音響学会

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    Event date: 2013.03   Language:Japanese  

  • 雑音除去音声の主観評価と客観評価との関係-音声歪みの短時間変動へ着目した考察-

    水町光徳

    日本音響学会研究発表会 

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    Event date: 2012.03   Language:Japanese  

  • 雑音除去音声に対する主観評価と客観評価との関係

    水町光徳

    日本音響学会電気音響研究会 

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    Event date: 2011.11   Language:Japanese  

  • Restoration of intermittent speech signal relying on auditory perceptual capability

    Mitsunori Mizumachi

    Meeting of the Acoustical Society of America 

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    Event date: 2011.10   Language:English  

  • 空間フィルタリングと周波数フィルタリングの適応的統合による雑音除去

    水町光徳

    日本音響学会研究発表会 

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    Event date: 2011.03   Language:Japanese  

  • 室内音響の肯定表現と否定表現による印象評価

    水町光徳

    日本音響学会聴覚研究会 

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    Event date: 2010.10   Language:Japanese  

  • Speech enhancement using adaptive spectral-spatial filter

    Mitsunori Mizumachi

    Meeting of the Acoustical Society of America 

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    Event date: 2010.10   Language:English  

  • パーティクルフィルタと音響信号処理

    水町光徳

    第3回横幹連合総合シンポジウム 

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    Event date: 2010.09   Language:Japanese  

  • 高齢者の「めりはりの無い声」を表す物理量に関する考察

    日本音響学会講演論文集(春) 

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    Event date: 2010.03   Language:Japanese  

  • 線形遅延和ビームフォーマの指向特性最適化の検討

    日本音響学会講演論文集(春) 

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    Event date: 2010.03   Language:Japanese  

  • 孤立単語の語頭母音部にみられる高齢者音声の音響的特徴

    日本音響学会講演論文集(春) 

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    Event date: 2010.03   Language:Japanese  

  • 高齢者の「めりはりのない声」に対応する物理量の検討

    日本音響学会九州支部第8回学生のための研究発表会講論集 

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    Event date: 2009.11   Language:Japanese  

  • マイクロホンアレーによる雑音除去音声の品質評価-線形遅延和アレーの最適化の検討-

    日本音響学会九州支部第8回学生のための研究発表会講論集 

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    Event date: 2009.11   Language:Japanese  

  • Spatial and acoustic feature extraction by particle filtering for efficient noise reduction

    J. Acoust. Soc. Am.(Proc. 158th MEETING OF THE ACOUSTICAL SOCIETY OF AMERICA) 

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    Event date: 2009.10   Language:English  

  • 高齢者音声の減り張りのなさとスペクトルの時間遷移の関係

    第62回電気関係学会九州支部連合大会講演論文集 

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    Event date: 2009.09   Language:Japanese  

  • 聴感上の好ましさと音響物理指標との関係について‐周波数帯域に着目した検討 -

    日本音響学会講演論文集(秋) 

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    Event date: 2009.09   Language:Japanese  

  • 音声認識のためのパラメータと距離尺度の検討

    第62回電気関係学会九州支部連合大会講演論文集 

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    Event date: 2009.09   Language:Japanese  

  • 音声認識における標準パターンに混入するノイズの検討

    第62回電気関係学会九州支部連合大会講演論文集 

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    Event date: 2009.09   Language:Japanese  

  • 高齢者音声に見られる「しゃがれ声」の医学的分類に基づく音響的特徴

    日本音響学会 2009年 春季研究発表会 講演論文集 

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    Event date: 2009.03   Language:Japanese  

  • 環境変化に頑健な空間・音響情報処理

    本人

    日本音響学会 2009年 春季研究発表会 講演論文集 

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    Event date: 2009.03   Language:Japanese  

  • 同一空間における聴感上の好ましさと音場の空間印象との関係について

    日本音響学会 2009年 春季研究発表会 講演論文集 

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    Event date: 2009.03   Language:Japanese  

  • マイクロホンアレーによる雑音除去音声の品質評価

    電子情報通信学会技術研究報告 

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    Event date: 2008.11   Language:Japanese  

  • 高齢者音声の聴覚的特徴を形容する語の抽出に関する検討

    電子情報通信学会技術研究報告 

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    Event date: 2008.10   Language:Japanese  

  • Direction-Of-Arrival (DOA) estimation by understanding global acoustic scene

    J. Acoust. Soc. Am.(Proc. 156th MEETING OF THE ACOUSTICAL SOCIETY OF AMERICA) 

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    Event date: 2008.10   Language:English  

  • 高齢者音声を印象付ける聴覚的特徴に関する検討

    日本音響学会 2008年 秋季研究発表会 講演論文集 

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    Event date: 2008.09   Language:Japanese  

  • マイクロホンアレーによる雑音除去音声の歪み評価

    日本音響学会 2008年 秋季研究発表会 講演論文集 

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    Event date: 2008.09   Language:Japanese  

  • 高齢者の「めりはりのない声」を表す音響的特徴の検討

    日本音響学会 2008年 秋季研究発表会 講演論文集 

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    Event date: 2008.09   Language:Japanese  

  • 高齢者音声の聴覚的特徴と対応する音響的特徴に関する検討

    第61回電気関係学会九州支部連合大会 講演論文集 

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    Event date: 2008.09   Language:Japanese  

  • 高齢者音声を特徴付ける表現語の抽出に関する検討

    日本音響学会 2008年 春季研究発表会 講演論文集 

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    Event date: 2008.03   Language:Japanese  

  • 雑音除去音声の品質評価線形遅延和アレーにおけるマイクロホン配置の検討

    日本音響学会九州支部 第7回 学生のための研究発表会 講演論文集 

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    Event date: 2007.10   Language:Japanese  

  • 大空間における好みの席の選定とその席における音響特性の解析

    日本音響学会九州支部 第7回 学生のための研究発表会 講演論文集 

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    Event date: 2007.10   Language:Japanese  

  • 大空間における主観的音響特徴と物理的音響特性との関係についての研究―座席位置の違いに着目した検討―

    平成19年度電気関係学会九州支部連合大会講演論文集 

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    Event date: 2007.09   Language:Japanese  

  • バズ音の長さに着目した高齢者音声の特徴解析

    平成19年度電気関係学会九州支部連合大会講演論文集 

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    Event date: 2007.09   Language:Japanese  

  • 音源と音環境の動特性を考慮した音源方向推定法

    日本音響学会講演論文集 

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    Event date: 2007.09   Language:Japanese  

  • 受音点の位置変化に頑健な適応的逆フィルタ設計法

    日本音響学会講演論文集 

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    Event date: 2007.03   Language:Japanese  

  • 高齢者発話の母音特徴に関する検討

    日本音響学会講演論文集 

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    Event date: 2007.03   Language:Japanese  

  • 音声認識のための高齢者音声の特徴分析

    パーティクルフィルタ研究会&ヒューマンインタフェース研究部会合同研究会 

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    Event date: 2007.01   Language:Japanese  

  • Direction-Of-Arrival (DOA) estimation by particle filtering with dominant frequency components in noisy environments

    Proc. 4th JOINT MEETING OF THE ACOUSTICAL SOCIETY OF AMERICA AND THEACOUSTICAL SOCIETY OF JAPAN, J. Acoust. Soc. Am., 

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    Event date: 2006.11.28 - 2006.12.02   Language:English  

  • 高齢者音声のスペクトル特徴に関する検討

    日本音響学会講演論文集 

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    Event date: 2006.09   Language:Japanese  

  • 周波数選択とパーティクルフィルタリングによる雑音に頑健な信号到来方向推定

    日本音響学会講演論文集 

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    Event date: 2006.09   Language:Japanese  

  • 周波数選択性を持つ相互相関に基づく信号到来方向推定

    電気関係学会九州支部第58回連合大会講演論文集 

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    Event date: 2006.09   Language:Japanese  

  • 高齢者音声を特徴付ける「めりはり」に関する音響的解析

    電気関係学会九州支部第58回連合大会講演論文集 

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    Event date: 2006.09   Language:Japanese  

  • 周波数選択性を持つ相互相関に基づく信号到来方向推定

    日本音響学会講演論文集 

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    Event date: 2006.03   Language:Japanese  

  • SLP雑音下音声認識評価WG活動報告:評価用データと評価手法について

    第7回音声言語シンポジウム 

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    Event date: 2005.12   Language:Japanese  

  • 高齢者音声認識を目的としたしゃがれ声の分析

    電気関係学会九州支部第57回連合大会講演論文集 

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    Event date: 2005.09   Language:Japanese  

  • 高齢者音声標準パターンによる高齢者音声認識性能の評価

    電気関係学会九州支部第57回連合大会講演論文集 

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    Event date: 2005.09   Language:Japanese  

  • Particle filterによる長期記憶と短期記憶を用いた信号到来方向推定

    日本音響学会講演論文集 

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    Event date: 2005.09   Language:Japanese  

  • 音声認識へのパワーエンベロープを用いた残響除去法の有効性検証

    電気関係学会九州支部第57回連合大会講演論文集 

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    Event date: 2005.09   Language:Japanese  

  • Particle filterを用いた相互相関に基づく音源到来方向推定法

    日本音響学会講演論文集 

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    Event date: 2005.03   Language:Japanese  

  • 実走行車内音声認識の評価データベースCENSREC-3とその共通評価ベースライン

    日本音響学会講演論文集 

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    Event date: 2005.03   Language:Japanese  

  • 実走行車内単語音声データベースCENSREC-3と共通評価環境の構築

    第55回 音声言語情報処理研究会 

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    Event date: 2005.02   Language:Japanese  

  • 実環境下音声認識の評価の標準化とその動向

    音声言語シンポジウム 

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    Event date: 2004.12   Language:Japanese  

  • CENSREC-3: 実走行車内単語音声データベースと評価環境の構築

    音声言語シンポジウム 

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    Event date: 2004.12   Language:Japanese  

  • 歩行者支援GISにおける耐雑音性音声入力インタフェース

    ヒューマンインタフェースシンポジウム2004 

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    Event date: 2004.10   Language:Japanese  

  • 歩行者支援GISにおける音声入力インタフェースの検討

    信学技報 

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    Event date: 2004.07   Language:Japanese  

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Industrial Property

  • 音響信号処理装置、音響信号処理方法、及びコンピュータプログラム

    水町光徳

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    Application no:'特願2010-00238  Date applied:2010.01.04

    本発明は、雑音環境下での音響観測信号より推定した音源方向の信頼性を推定する音響信号処理装置及び音響信号処理方法、並びにコンピュータに音源方向の信頼性を推定させる
    ためのコンピュータプログラムに関する。

  • マイクロホンアレー座標系の逐次的補正方法、マイクロホンアレーにおけるマイクロホン受信信号の補正方法および補正装置

    堀内俊治,水町光徳,中村哲

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    Announcement no:'特開2004-112701  Date announced:2004.04.20

  • 音源方向推定装置、信号の時間遅延推定装置及びコンピュータプログラム

    スーン・フランク・ガーピン,ガスニエー・セバスチャン,水町光徳,中村哲

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    Announcement no:'特許公開2005-77205  Date announced:2005.03.24

  • マイクロホンアレー

    嵯峨山茂樹,鎌本優,西本卓也,堀内俊治,水町光徳,中村哲

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    Announcement no:'特開2005-260743  Date announced:2005.09.22

  • マイクロホンアレーにおけるマイクロホン受音信号の同相化方法および同相化装置

    堀内俊治,水町光徳,中村哲

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    Announcement no:'特許公開2005-260744  Date announced:2005.09.22

  • ノイズ除去装置

    水町光徳,中村哲

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    Announcement no:'特開2005-258158  Date announced:2005.09.22

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Grants-in-Aid for Scientific Research

  • 連続聴効果を積極的に利用した断続音声の知覚的修復

    Grant number:26330197  2014.04 - 2017.03   基盤研究(C)

  • 音源・音環境の統一的モデリングによる雑音に頑健な音源方向推定に関する研究

    Grant number:20760266  2008.04 - 2010.03   若手研究(B)

  • 高齢者の音響的特徴抽出に基づく高齢者音声認識インタフェースに関する研究

    Grant number:19560387  2007.04 - 2010.03   基盤研究(C)

  • 音響空間情報を用いた環境依存性の低い雑音除去法に関する研究

    Grant number:17760338  2005.04 - 2008.03   若手研究(B)

  • ユビキタス時代の音声インタフェース実現のための高齢者音声認識に関する研究

    Grant number:17560345  2005.04 - 2007.03   基盤研究(C)

Other External Funds

  • 周波数・空間フィルタリングと目的音源追尾との有機的融合による雑音除去技術の研究開発

    2008.06 - 2012.05

    産業技術研究助成事業  

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    課題番号:08A12002c

Activities of Academic societies and Committees

  • Acoustical Society of Japan  

    2021.05

  • Acoustical Society of Japan  

    2023.05

  • (一社)産業応用工学会   理事  

    2022.09

  • Audio Engineering Society   Convention Papers Program Committee  

    2022.02

  • The institue of electronics, information and communication engineers (IEICE)  

    2019.06

  • Acoustical Society of Japan  

    2019.06

  • Acoustical Society of Japan  

    2019.06 - 2021.05

  • Acoustical Society of Japan  

    2019.04 - 2021.03

  • International Congress on Sound and Vibration   International Scientific Committee  

    2018.07

  • The institue of electronics, information and communication engineers (IEICE)  

    2018.06

  • Acoustical Society of Japan  

    2017.06 - 2021.05

  • Acoustical Society of Japan  

    2017.06 - 2019.05

  • Acoustical Society of Japan  

    2017.06 - 2019.05

  • Acoustical Society of Japan  

    2017.06 - 2018.05

  • The institue of electronics, information and communication engineers (IEICE)  

    2017.06 - 2018.05

  • The institue of electronics, information and communication engineers (IEICE)  

    2016.06 - 2017.05

  • Acoustical Society of Japan  

    2016.06 - 2017.05

  • The institue of electronics, information and communication engineers (IEICE)  

    2016.06 - 2017.05

  • The institue of electronics, information and communication engineers (IEICE)  

    2016.06 - 2017.05

  • The institue of electronics, information and communication engineers (IEICE)  

    2016.06 - 2017.05

  • The institue of electronics, information and communication engineers (IEICE)  

    2015.06 - 2017.05

  • Acoustical Society of Japan  

    2015.05 - 2016.05

  • The institue of electronics, information and communication engineers (IEICE)  

    2015.05 - 2016.05

  • The institue of electronics, information and communication engineers (IEICE)  

    2015.01 - 2017.05

  • Acoustical Society of Japan  

    2014.04 - 2016.03

  • Acoustical Society of Japan  

    2013.05 - 2015.05

  • The institue of electronics, information and communication engineers (IEICE)  

    2013.05 - 2015.05

  • The institue of electronics, information and communication engineers (IEICE)  

    2013.05 - 2014.04

  • 信号処理学会   編集委員  

    2012.12

  • The institue of electronics, information and communication engineers (IEICE)  

    2012.05 - 2013.05

  • Acoustical Society of Japan  

    2012.05 - 2013.05

  • Acoustical Society of Japan  

    2012.04 - 2014.03

  • The Acoustic Society of America   Reviewer  

    2011.10

  • 電気関係学会九州支部連合会庶務幹事   庶務幹事  

    2010.04 - 2011.03

  • The institue of electronics, information and communication engineers (IEICE)  

    2009.04 - 2013.05

  • Acoustical Society of Japan  

    2009.04 - 2011.03

  • 電気関係学会九州支部連合会庶務幹事   役員  

    2009.04 - 2010.03

  • European Signal Processing Conference   Reviewer  

    2008.04

  • Information Processing Society of Japan (IPSJ)  

    2005.04

  • Elsevier Applied Acoustics   Reviewer  

    2003.04

  • Acoustical Society of Japan  

    2003.04

  • Information Processing Society of Japan (IPSJ)  

    2002.04 - 2006.03

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Social activity outside the university

  • 音声コミュニケーション支援システムの研究開発と応用

    2014.01.20

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    Type:Seminar, workshop

    九州ニュービジネス協議会「第3回 大学シーズ活用促進セミナー」

  • 人の聴覚に学ぶ賢い音情報処理システム

    2013.10.19

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    Type:Other

    夢ナビライブ

  • 豊かな生活を支える音響信号処理技術

    2013.10.17

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    Type:Seminar, workshop

    九州・国際テクノフェア2013出展社セミナー