Updated on 2026/03/07

写真a

 
MURAKAMI TAKAHIRO
 
Organization
Undergraduate School School of Science and Technology Associate Professor
Title
Associate Professor
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Research Interests

  • ディジタル信号処理,老人性難聴,補聴器,パラメータ推定,信号分離

Research Areas

  • Life sciences / Rehabilitation science  / 医療福祉工学関連

Education

  • Meiji University   Graduate School of Science and Technology   Electrical Engineering Program

    2002.4 - 2005.3

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    Country/Region: Japan

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  • Meiji University   Graduate School of Science and Technology   Electrical Engineering Program

    2000.4 - 2002.3

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    Country/Region: Japan

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  • Meiji University   School of Science and Technology   Department of Electronics and Communication Engineering

    1996.4 - 2000.3

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    Country/Region: Japan

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Research History

  • Meiji University   School of Science and Technology   Lecturer   Assistant Professor

    2012.4

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  • Tokyo Metroporitan College of Industrial Technology   Assistant Professor   Assistant Professor at the Department of Monozukuri Engineering

    2009.4 - 2012.3

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  • JSPS Research Fellow

    2006.4 - 2009.3

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  • JSPS   Special researcher of the Japan Society for the Promotion of Science   Research Fellow

    2006.4 - 2009.3

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  • Meiji University   Research Assistant   Research Assistant at the School of Science and Technology

    2005.4 - 2006.3

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Professional Memberships

  • 米国電気電子学会(IEEE)

    2020.2

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  • 電気学会

    2017.5

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  • 情報処理学会

    2015.11

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  • 日本音響学会

    2012.4

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  • Institute of Electronics, Information and Communication Engineers (IEICE)

    2000.4

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Papers

  • 未知の到来方向を含んだ参照信号を用いたマイクロホンアレーの校正 Reviewed

    村上隆啓,小野寺章吾,丹治寛樹

    電気学会論文誌C   144 ( 2 )   53 - 63   2024.2

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  • Deep multiplicative update algorithm for nonnegative matrix factorization and its application to audio signals Reviewed

    Hiroki Tanji, Takahiro Murakami

    IEICE Trans. Fundamentals   E106-A ( 7 )   962 - 975   2023.7

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

    DOI: 10.1587/transfun.2022EAP1098

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  • Improved model-free adaptive control for integral plants Reviewed International journal

    Kenta Kariyazono, Takeru Yamazaki, Hiroki Tanji, Yoshihisa Ishida, Takahiro Murakami

    Proc. IFAC World Congress 2023   5247 - 5252   2023.7

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  • Improvement of the direction-of-arrival estimation method using a single channel microphone by correcting a spectral slope of speech Reviewed International journal

    Masaki Ikeuchi, Hiroki Tanji, Takahiro Murakami

    Proc. APSIPA ASC 2022   386 - 393   2022.11

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  • Learning the statistical model of the NMF using the deep multiplicative update algorithm with applications Reviewed International journal

    Hiroki Tanji, Takahiro Murakami

    Proc. APSIPA ASC 2021   205 - 211   2021.12

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  • An analytical solution to Jacobsen estimator for windowed signals Reviewed International coauthorship International journal

    Takahiro Murakami, Wenwu Wang

    Proc. ICASSP 2020   5950 - 5954   2020.5

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  • A generalization of Laplace nonnegative matrix factorization and its multichannel extension Reviewed International journal

    Hiroki Tanji, Takahiro Murakami, Hiroyuki Kamata

    Proc. APSIPA ASC 2019   1694 - 1699   2019.11

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  • Laplace nonnegative matrix factorization with application to semi-supervised audio denoising Reviewed International journal

    Hiroki Tanji, Takahiro Murakami, Hiroyuki Kamata

    Proc. EUSIPCO 2019   2019.9

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  • A nonparametric Bayesian model for system identification based on a super-Gaussian distribution Reviewed

    Hiroki Tanji, Takahiro Murakami, Hiroyuki Kamata

    Electronics and Communications in Japan   102 ( 7 )   32 - 40   2019.5

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  • 優ガウス性の分布に基づくシステム同定のためのノンパラメトリックベイズモデル Reviewed

    丹治寛樹,村上隆啓,鎌田弘之

    電気学会論文誌C   139 ( 4 )   380 - 387   2019.4

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  • Blind system identification for acoustic impulse responses based on maximum likelihood estimation Reviewed

    Saki Ohashi, Hiroki Tanji, Takahiro Murakami

    Proc. ISPACS 2018   189 - 194   2018.11

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  • Robust FIR system identification for super-Gaussian noise based on hyperbolic secant Distribution Reviewed

    Hiroki Tanji, Takahiro Murakami, Hiroyuki Kamata

    Proc. ISPACS 2018   195 - 199   2018.11

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  • 位相アンラップが不要なPhase Vocoder Reviewed

    米口遼一,村上隆啓

    電気学会論文誌C   138 ( 4 )   352 - 359   2018.4

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  • Array shape calibration using near field pilot sources with unknown distance Reviewed

    Soichiro Aoki, Hiroki Tanji, Takahiro Murakami

    Proc. APSIPA ASC 2017   892 - 896   2017.12

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  • Time-scale and pitch-scale modification by the phase vocoder without occurring the phase unwrapping problem Reviewed

    Ryoichi Yoneguchi, Takahiro Murakami

    Proc. DSP 2017   1 - 5   2017.8

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  • FOBOSを用いたスパース性を持つインパルス応答の推定 Reviewed

    竒藤圭人,田中諒,村上隆啓

    情報処理学会論文誌   57 ( 10 )   2298 - 2306   2016.10

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  • FIR system identification based on a nonparametric Bayesian model using the Indian buffet process Reviewed

    Hiroki Tanji, Ryo Tanaka, Takahiro Murakami, Yoshihisa Ishida

    SIGNAL IMAGE AND VIDEO PROCESSING   10 ( 6 )   1105 - 1112   2016.9

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    DOI: 10.1007/s11760-016-0865-x

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  • A linear programming-based approach to I-PD controller design for a multi-input-multi-output system Reviewed

    Ryo Tanaka, Takahiro Murakami, Yoshihisa Ishida

    Proc. CCC2016   284 - 291   2016.7

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  • Nonparametric Bayesian models for AR and ARX identification Reviewed

    Hiroki Tanji, Ryo Tanaka, Takahiro Murakami, Yoshihisa Ishida

    Proc. CSPA 2016   94 - 99   2016.3

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  • Generalized sliding discrete Fourier transform Reviewed

    Takahiro Murakami, Yoshihisa Ishida

    IEICE Trans. Fundamentals   E99-A ( 1 )   338 - 345   2016.1

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    DOI: 10.1587/transfun.E99.A.338

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  • Model matching control based on discrete-time improved ADRC considering plant input-side disturbance Reviewed

    Ryo Tanaka, Takahiro Murakami, Yoshihisa Ishida

    Proc. AIMS2015   202 - 207   2015.12

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    DOI: 10.1109/AIMS.2015.40

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  • Minimum length of a signal for fundamental frequency estimation and its application Reviewed

    Takahiro Murakami, Hiroyuki Yamagishi, Yoshihisa Ishida

    IEICE Trans. Fundamentals   E98-A ( 9 )   1914 - 1923   2015.9

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    DOI: 10.1587/transfun.E98.A.1914

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  • Derivation of update rules for convolutive NMF based on squared Euclidean distance, KL divergence, and IS divergence Reviewed

    Hiroki Tanji, Ryo Tanaka, Kyohei Tabata, Yoshito Iseki, Takahiro Murakami, Yoshihisa Ishida

    IEICE Trans. Fundamentals   E97-A ( 11 )   2121 - 2129   2014.11

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    DOI: 10.1587/transfun.E97.A.2121

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  • Estimation of an Impulse Response Using Kurtosis Reviewed

    Keito Kito, Takahiro Murakami

    ASIASIM 2014   474   26 - 34   2014

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  • Controller design approach based on linear programming Reviewed

    Ryo Tanaka, Hiroki Shibasaki, Hiromitsu Ogawa, Takahiro Murakami, Yoshihisa Ishida

    ISA TRANSACTIONS   52 ( 6 )   744 - 751   2013.11

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    DOI: 10.1016/j.isatra.2013.07.003

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  • Convolutive NMF based on squared Euclidean distance, KL divergence, and IS divergence Reviewed

    Hiroki Tanji, Ryo Tanaka, Kyohei Tabata, Yoshito Iseki, Takahiro Murakami, Yoshihisa Ishida

    Proc. SISA2013   67 - 72   2013.10

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  • An approach to multi-pitch estimation using a support vector machine Reviewed

    Masaru Fujieda, Takahiro Murakami, Yoshihisa Ishida

    International Journal of Computers and Applications   33 ( 3 )   202 - 210   2011.7

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    DOI: 10.2316/Journal.202.2011.3.202-2818

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  • Sinusoidal parameter estimation using roots of an algebraic equation Reviewed

    Takahiro Murakami, Yoshihisa Ishida

    IEICE Trans. Fundamentals   E94-A ( 7 )   1487 - 1496   2011.7

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    DOI: 10.1587/transfun.E94.A.1487

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  • Measurement of similarity between latent variables Reviewed

    Takahiro Murakami, Toshihisa Tanaka, Yoshihisa Ishida

    IEICE Trans. Fundamentals   E92-A ( 3 )   824 - 831   2009.3

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    DOI: 10.1587/transfun.E92.A.824

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  • Time-domain blind signal separation of convolutive mixtures via multidimensional independent component analysis Reviewed

    Takahiro Murakami, Toshihisa Tanaka, Yoshihisa Ishida

    IEICE Trans. Fundamentals   E92-A ( 3 )   733 - 744   2009.3

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    DOI: 10.1587/transfun.E92.A.733

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  • Pitch shifting of music based on adaptive order estimation of linear predictor Reviewed

    Naoki Koshikawa, Takahiro Murakami, Toshihisa Tanaka

    Proc. PCM2008   5353   40 - 49   2008.12

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  • Adaptive filtering for attenuating musical noise caused by spectral subtraction Reviewed

    Takahiro Murakami, Toshihisa Tanaka, Yoshihisa Ishida

    Proc. Interspeech2006-ICSLP   1443 - 1446   2006.9

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  • A fast algorithm for ICA deduced from a closed-form solution of kurtosis maximization Reviewed

    Takahiro Murakami, Toshihisa Tanaka, Yoshihisa Ishida

    Proc. MLSP2006   223 - 228   2006.9

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    DOI: 10.1109/MLSP.2006.275552

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  • Directionally constrained minimization of power algorithm for speech signals Reviewed

    Takahiro Murakami, Kiyoshi Kurihara, Yoshihisa Ishida

    Proc. Interspeech2005-Eurospeech   2333 - 2336   2005.9

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  • Stereophonics noise reduction using a combined sliding subspace projection and adaptive signal enhancement Reviewed

    T Hoya, T Tanaka, A Cichocki, T Murakami, G Hori, JA Chambers

    IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING   13 ( 3 )   309 - 320   2005.5

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    DOI: 10.1109/TSA.2005.845792

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  • Speech enhancement by spectral subtraction based on subspace decomposition Reviewed

    Takahiro Murakami, Tetsuya Hoya, Yoshihisa Ishida

    IEICE Trans. Fundamentals   E88-A ( 3 )   690 - 701   2005.3

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    DOI: 10.1093/ietfec/e88-a.3.690

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  • Blind speech extraction using subband independent component analysis with scale adjustment function and neural memory Reviewed

    Takeshi Hanada, Tetsuya Hoya, Takahiro Murakami, Yoshihisa Ishida

    Proc. TENCON2004   665 - 668   2004.11

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  • Spoken digits recognition by subspace decomposition method Reviewed

    Ken Kusakari, Kiyoshi Kurihara, Takahiro Murakami, Yoshihisa Ishida

    Proc. TENCON2004   72 - 75   2004.11

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  • Stereophonic noise reduction by a combined non-recursive multi-stage sliding subspace projection and adaptive signal enhancement Reviewed

    Tetsuya Hoya, Toshihisa Tanaka, Takahiro Murakami, Andrzej Cichocki

    Proc. ALCOSP-2004   421 - 426   2004.8

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  • A combined cascading subspace and adaptive signal enhancement method for stereophonic noise reduction Reviewed

    Tetsuya Hoya, Andrzej Cichocki, Toshihisa Tanaka, Gen Hori, Takahiro Murakami, Jonathon A. Chambers

    Proc. ICA2003   573 - 578   2003.4

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  • Recovery of broadband speech from narrowband speech by radial basis function neural networks Reviewed

    Tomomi Watanabe, Takahiro Murakami, Munehiro Namba, Tetsuya Hoya, Yoshihisa Ishida

    Proc. TENCON2002   469 - 472   2002.10

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  • Speech enhancement base on a combined higher frequency regeneration technique and RBF networks Reviewed

    Takahiro Murakami, Munehiro Namba, Tetsuya Hoya, Yoshihisa Ishida

    Proc. TENCON2002   457 - 460   2002.10

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  • Pitch extraction of speech signals using an eigen-based subspace method Reviewed

    Takahiro Murakami, Munehiro Namba, Tetsuya Hoya, Yoshihisa Ishida

    Proc. ICSLP2002   1729 - 1732   2002.9

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  • Transformation of spectral envelope for voice conversion based on radial basis function networks Reviewed

    Tomomi Watanabe, Takahiro Murakami, Munehiro Namba, Tetsuya Hoya, Yoshihisa Ishida

    Proc. ICSLP2002   285 - 288   2002.9

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  • Fundamental frequency estimation of speech signals using MUSIC algorithm Reviewed

    Takahiro Murakami, Yoshihisa Ishida

    Journal of the Acoustical Society of Japan (E)   22 ( 4 )   293 - 297   2001.7

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    DOI: 10.1250/ast.22.293

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  • Speech enhancement using MUSIC algorithm Reviewed

    Takahiro Murakami, Munehiro Namba, Tetsuya Hoya, Yoshihisa Ishida

    Proc. SPPRA2001   213 - 216   2001.7

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Books

  • ディジタル信号処理におけるシステム最適化技術: 基礎技術から音声 ・音響信号処理,産業応用と情報システムまで

    電気学会・ディジタル信号処理システム最適化技術調査専門委員会( Role: Joint author第7章 位相アンラップが不要なPhase Vocoderにおける雑音の影響)

    オーム社  2021.10 

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    Total pages:263   Responsible for pages:129-153   Language:Japanese   Book type:Scholarly book

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Presentations

  • 粒子群最適化を用いた電気車の空転制御のパラメータ調整

    丹治寛樹,山下道寛,村上隆啓

    令和5年電気学会全国大会  2023.3  電気学会

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋  

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  • 若年者と高齢者の聴覚フィードバックにおける遅延時間の許容量の統計的分析による比較

    香山実結花,山下一樹,丹治寛樹,村上隆啓

    電子情報通信学会東京支部学生会第28回研究発表会  2023.3  電子情報通信学会

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    Event date: 2023.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:オンライン  

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  • Phase Vocoderの音質改善に向けた位相スペクトルを用いた音の境目の検出

    八木澤太貴,池内柾,丹治寛樹,村上隆啓

    電気学会システム研究会  2022.6  電気学会

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    Event date: 2022.6

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  • 到来方向に誤差を含む参照信号を利用したマイクロホンアレーの校正

    小野寺章吾,池内柾,丹治寛樹,村上隆啓

    電気学会システム研究会  2021.12  電気学会

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    Event date: 2021.12

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    Venue:オンライン  

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  • 最尤推定に基づく1ch到来方向推定法の音声信号への拡張

    池内柾,小野寺章吾,丹治寛樹,村上隆啓

    電気学会システム研究会  2021.12  電気学会

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    Event date: 2021.12

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    Venue:オンライン  

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  • 連続時間伝達関数パラメータの実時間抽出

    假屋園健太,丹治寛樹,石田義久,村上隆啓

    令和6年電気学会全国大会  2024.3  電気学会

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:徳島  

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  • 若年者と高齢者の遅延聴覚フィードバックの身体運動への影響の比較

    山下一樹,安田和生,丹治寛樹,村上隆啓

    電子情報通信学会東京支部学生会第29回研究発表会  2024.3  電子情報通信学会

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    Venue:オンライン  

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  • Phase Vocoderを用いた話速変換におけるTransient Smearingの軽減

    八木澤太貴,丹治寛樹,村上隆啓

    第38回信号処理シンポジウム  2023.11  電子情報通信学会

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:京都  

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  • 深層乗算更新アルゴリズムを用いた非負値行列因子分解の統計モデルの学習

    丹治寛樹,村上隆啓

    2021年電子情報通信学会総合大会  2021.3  電子情報通信学会

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    Venue:オンライン  

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  • 最尤推定に基づいたノッチ周波数推定法におけるステップサイズパラメータについての検討

    松尾宇紘,丹治寛樹,村上隆啓

    電子情報通信学会東京支部学生会第26回研究発表会  2021.3  電子情報通信学会

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    Venue:オンライン  

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  • 1chマイクロホンによる音響信号の到来方向推定のための最尤原理に基づいたノッチ周波数推定法

    松尾宇紘,丹治寛樹,村上隆啓

    電子情報通信学会信号処理研究会  2021.1  電子情報通信学会

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    Venue:オンライン  

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  • マイクロホンアレーの校正において観測信号のスペクトログラムを利用する妥当性の検証

    梅村直希,丹治寛樹,村上隆啓,松本直樹

    電気学会システム研究会  2020.1  電気学会

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:千葉  

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  • 遅延聴覚フィードバックが身体運動に与える影響の客観的な評価方法の検討

    重松颯人,丹治寛樹,村上隆啓,松本直樹

    日本音響学会聴覚研究会  2019.11  日本音響学会

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    Language:Japanese   Presentation type:Poster presentation  

    Venue:千葉  

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  • 低域通過フィルタを用いた気導音からの自己聴取音の再現

    落合裕貴,丹治寛樹,村上隆啓,松本直樹

    音学シンポジウム2019  2019.6  情報処理学会

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    Language:Japanese   Presentation type:Poster presentation  

    Venue:京都  

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  • ホーンとフィルタリングを用いた小型スピーカーの音質改善

    戸田佑希,村上隆啓

    平成30年度電子情報通信学会東京支部学生会研究発表会  2019.3  電子情報通信学会

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京  

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  • 部分空間法に基づいた有色雑音を想定したブラインドシステム同定

    大橋沙季,丹治寛樹,村上隆啓

    第33回信号処理シンポジウム  2018.11  電子情報通信学会

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京  

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  • 観測雑音に双曲線正割分布を用いた上界最小化に基づくカルマンフィルタ

    丹治寛樹,村上隆啓,鎌田弘之

    電気学会システム研究会  2018.8  電気学会

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    Venue:東京  

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  • 1チャンネルマイクロホンを用いた到来方向推定の音声信号への拡張

    竹内祐太,村上隆啓

    平成29年度電子情報通信学会東京支部学生会研究発表会  2018.3  電子情報通信学会

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    Venue:東京  

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  • 高齢者の聴覚における遅延時間の許容量の評価

    重松颯人,村上隆啓

    平成29年度電子情報通信学会東京支部学生会研究発表会  2018.3  電子情報通信学会

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    Venue:東京  

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  • 聴覚フィードバックのための気導音と骨導音間の遅延時間の測定

    落合裕貴,村上隆啓

    平成29年度電子情報通信学会東京支部学生会研究発表会  2018.3  電子情報通信学会

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    Venue:東京  

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  • バイナリ潜在特徴モデルのための尤度関数にラプラス分布を用いたベイズモデル

    丹治寛樹,村上隆啓,鎌田弘之

    第32回信号処理シンポジウム  2017.11  電子情報通信学会

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    Venue:岩手  

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  • 位相アンラップが不要なPhase Vocoderにおける計算量の削減

    米口遼一,村上隆啓

    第32回信号処理シンポジウム  2017.11  電子情報通信学会

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    Venue:岩手  

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  • インパルス応答を利用した残響下におけるマイクロホンアレー校正の性能改善

    青木創一朗,丹治寛樹,村上隆啓

    第32回信号処理シンポジウム  2017.11  電子情報通信学会

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    Venue:岩手  

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  • 位相アンラップ問題が発生しないPhase Vocoderに対する雑音の影響の調査

    米口遼一,村上隆啓

    電気学会システム研究会  2017.9  電気学会

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    Venue:東京  

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  • 複素ラプラス分布に基づく非負値行列因子分解

    丹治寛樹,村上隆啓,鎌田弘之

    情報処理学会音楽情報科学研究会  2017.8  情報処理学会

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    Venue:北海道  

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  • 近傍音源からの参照信号を用いたマイクロホンアレー校正法の一般化

    青木創一朗,村上隆啓

    日本音響学会2017年春季研究発表会  2017.3  日本音響学会

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    Venue:神奈川  

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  • 位相アンラップ問題が発生しないPhase Vocoder

    米口遼一,村上隆啓

    日本音響学会2017年春季研究発表会  2017.3  日本音響学会

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    Venue:神奈川  

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  • 最尤推定を用いたインパルス応答の推定

    大橋沙季,村上隆啓

    平成28年度電子情報通信学会東京支部学生会研究発表会  2017.3  電子情報通信学会

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    Venue:東京  

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  • An approach to a model following sliding mode controller design based on a Takagi-Sugeno fuzzy model International conference

    Ryo Tanaka, Takahiro Murakami, Yoshihisa Ishida

    NCSP'17  2017.3  Research Institute of Signal Processing, Japan

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    Venue:Guam, USA  

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  • The largest Cramer-Rao Lower Bound for variance estimation of acoustic signals International conference

    Hiroki Takahashi, Takahiro Murakami

    5th ASA/ASJ  2016.11  Acoustical Society of America, Acoustical Society of Japan

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    Venue:Hawaii, USA  

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  • 1チャンネルマイクロホンによる音響信号の到来方向推定法

    宇津貴之,村上隆啓

    第31回信号処理シンポジウム  2016.11  電子情報通信学会

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    Venue:大阪  

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  • 参照信号を用いたマイクロホンアレーの校正における球面波モデルへの適用

    青木創一朗,村上隆啓

    第31回信号処理シンポジウム  2016.11  電子情報通信学会

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    Venue:大阪  

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  • Polyphonic music transcription using supervised nonnegative matrix factorization combined with musical key estimation International conference

    Kodai Fujita, Takahiro Murakami

    NCSP'16  2016.3  Research Institute of Signal Processing, Japan

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    Venue:Hawaii, USA  

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  • 参照信号の到来方向を考慮したマイクロホンアレーの校正

    青木創一朗,村上隆啓

    平成27年度電子情報通信学会東京支部学生会研究発表会  2016.3  電子情報通信学会

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    Venue:東京  

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  • スパースなインパルス応答の推定に有色雑音を用いる場合におけるL1正則化の有効性

    竒藤圭人,田中諒,村上隆啓

    電子情報通信学会信号処理研究会  2016.1  電子情報通信学会

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    Venue:大阪  

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  • 音声のスパース性に基づく複数音源定位における最尤推定による計算量削減

    迎純平,石田義久,村上隆啓

    第30回信号処理シンポジウム  2015.11  電子情報通信学会

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    Venue:福島  

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  • フレーム内における信号の開始点の推定

    太田安莉,石田義久,村上隆啓

    第30回信号処理シンポジウム  2015.11  電子情報通信学会

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    Venue:福島  

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  • FOBOSを用いたスパース性を持つインパルス応答の推定

    竒藤圭人,田中諒,村上隆啓

    第14回情報科学技術フォーラム  2015.9  FIT2015

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    Venue:愛媛  

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  • 補聴器における遅延時間の許容量の評価

    高橋浩貴,村上隆啓

    平成26年度電子情報通信学会東京支部学生会研究発表会  2015.2  電子情報通信学会

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    Venue:東京  

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  • ノンパラメトリックベイズモデルに基づくFIRフィルタの同定

    丹治寛樹,田中諒,田畑恭平,神尾大樹,村上隆啓,石田義久

    第29回信号処理シンポジウム  2014.11  電子情報通信学会

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    Venue:京都  

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  • Improvement of the histogram in the DUET algorithm International conference

    Junpei Mukae, Yoshihisa Ishida, Takahiro Murakami

    168th ASA  2014.10  Acoustical Society of America

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    Venue:Indiana, USA  

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  • Start point estimation of a signal in a frame International conference

    Anri Ota, Yoshihisa Ishida, Takahiro Murakami

    168th ASA  2014.10  Acoustical Society of America

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    Venue:Indiana, USA  

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  • 話速変換における波形歪みの動的抑制

    小林賢太,柴崎年彦,村上隆啓

    平成25年度電子情報通信学会東京支部学生会研究発表会  2014.3  電子情報通信学会

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    Venue:東京  

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  • 信号部分空間を用いたスパースなインパルス応答のブラインド推定

    村上隆啓,石田義久

    第28回信号処理シンポジウム  2013.11  電子情報通信学会

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    Venue:山口  

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  • Phase Vocoder を用いた話速変換における波形の歪みの抑制

    小林賢太,柴崎年彦,村上隆啓

    第42回電磁界理論シンポジウム  2013.11  電子情報通信学会

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    Venue:青森  

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  • スペクトル引き算法における最適な位相スペクトル

    村上隆啓,篠原知子,石田義久

    電子情報通信学会信号処理研究会  2013.5  電子情報通信学会

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    Venue:岡山  

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  • Phase Vocoderを用いた音高変換におけるスペクトル伸縮法の改良

    小林賢太,柴崎年彦,村上隆啓

    平成24年度電子情報通信学会東京支部学生会研究発表会  2013.3  電子情報通信学会

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    Venue:東京  

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  • 雑音環境下における周期信号の基本周波数推定のためのCramer-Raoの下界

    村上隆啓,石田義久

    第27回信号処理シンポジウム  2012.11  電子情報通信学会

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    Venue:沖縄  

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  • 広帯域信号のためのPower Inversion法の拡張

    安藤将,村上隆啓

    平成23年度電子情報通信学会東京支部学生会研究発表会  2012.3  電子情報通信学会

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    Venue:東京  

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  • Power Inversion法の広帯域信号への拡張

    安藤将,村上隆啓,石田義久

    第26回信号処理シンポジウム  2011.11  電子情報通信学会

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    Venue:北海道  

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  • 代数方程式の根を用いた基本周波数推定

    村上隆啓,石田義久

    2011年電子情報通信学会総合大会  2011.3  電子情報通信学会

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    Venue:東京  

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  • 代数方程式の根を用いた正弦波パラメータの推定

    村上隆啓,石田義久

    第24回信号処理シンポジウム  2009.11  電子情報通信学会

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    Venue:鹿児島  

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  • Subband decomposition based on a musical scale for a phase vocoder

    Takahiro Murakami, Naoki Koshikawa, Takeshi Oya, Toshihisa Tanaka, Yoshihisa Ishida

    第23回信号処理シンポジウム  2008.11  電子情報通信学会

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    Venue:石川  

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  • ランダム変数間の類似度の測定とブラインド信号分離への応用

    村上隆啓,田中聡久,石田義久

    電子情報通信学会信号処理研究会  2008.7  電子情報通信学会

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    Venue:広島  

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  • 誤差最小化フィルタの設計

    村上隆啓,田中聡久,石田義久

    2008年電子情報通信学会総合大会  2008.3  電子情報通信学会

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    Venue:福岡  

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  • 擬似独立成分の分類によるブラインド信号分離

    村上隆啓,田中聡久,石田義久

    第22回信号処理シンポジウム  2007.11  電子情報通信学会

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    Venue:宮城  

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  • 線形予測による楽曲の音程変換のための適応的次数推定

    越川尚樹,村上隆啓,田中聡久

    第22回信号処理シンポジウム  2007.11  電子情報通信学会

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    Venue:宮城  

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  • 直交群上における同時ブロック対角化

    高柳健生,田中聡久,村上隆啓

    電子情報通信学会信号処理研究会  2007.5  電子情報通信学会

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    Venue:大阪  

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  • 楽曲信号生成モデルにおける極数の適応推定と音程変換への応用

    越川尚樹,村上隆啓,田中聡久

    電子情報通信学会信号処理研究会  2007.5  電子情報通信学会

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    Venue:大阪  

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  • DFT基底関数を用いた重複周波数分割法によるブラインド信号分離

    村上隆啓,田中聡久,石田義久

    第21回信号処理シンポジウム  2006.11  電子情報通信学会

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    Venue:京都  

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  • 固有値分解を用いたKurtosis最大化による独立成分分析

    村上隆啓,田中聡久,Andrzej Cichocki,石田義久

    第20回信号処理シンポジウム  2005.11  電子情報通信学会

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    Venue:高知  

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  • ヒルベルト変換と低域通過フィルタを用いたブラインド信号分離

    村上隆啓,田中聡久,石田義久

    第19回信号処理シンポジウム  2004.11  電子情報通信学会

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    Venue:山梨  

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  • 部分空間法を用いた数字音声認識

    草刈憲,栗原清,村上隆啓,石田義久

    第19回信号処理シンポジウム  2004.11  電子情報通信学会

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    Venue:山梨  

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  • Target sound source extraction using spectral subtraction with a two-channel microphone array International conference

    Takahiro Murakami, Yoshihisa Ishida

    146th ASA  2003.11  Acoustical Society of America

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    Venue:Texas, USA  

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  • Spoken digits recognition using DP matching combined with a subspace decomposition method International conference

    Ken Kusakari, Kiyoshi Kurihara, Takahiro Murakami, Yoshihisa Ishida

    146th ASA  2003.11  Acoustical Society of America

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    Venue:Texas, USA  

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  • Musical noise reduction using an adaptive filter International conference

    Takeshi Hanada, Takahiro Murakami, Yoshihisa Ishida

    146th ASA  2003.11  Acoustical Society of America

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    Venue:Texas, USA  

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  • A speech enhancement method using the sliding DFT International conference

    Hiroyuki Ono, Takahiro Murakami, Yoshihisa Ishida

    146th ASA  2003.11  Acoustical Society of America

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    Venue:Texas, USA  

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  • Voice conversion using the radial basis function network and the frequency-domain pitch modification technique International conference

    Tomomi Watanabe, Takahiro Murakami, Yoshihisa Ishida

    146th ASA  2003.11  Acoustical Society of America

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    Venue:Texas, USA  

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  • Pitch estimation of speech signals using MUSIC algorithm International conference

    Takahiro Murakami, Yoshihisa Ishida

    17th ICA  2001.9  International Commission on Acoustics

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    Venue:Rome, Italy  

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  • Noise reduction of speech signals using MUSIC algorithm International conference

    Takahiro Murakami, Munehiro Namba, Tetsuya Hoya, Yoshihisa Ishida

    17th ICA  2001.9  International Commission on Acoustics

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    Venue:Rome, Italy  

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  • MUSIC法を用いた音声信号の雑音除去

    村上隆啓,石田義久

    第20回シミュレーション・テクノロジー・コンファレンス  2001.6  日本シミュレーション学会

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    Venue:東京  

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  • Pitch determination by fundamental-harmonic extraction using MUSIC algorithm International conference

    Takahiro Murakami, Yoshihisa Ishida

    140th ASA  2000.12  Acoustical Society of America

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    Venue:California, USA  

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  • MUSICアルゴリズムを用いた音声の基本周波数の推定

    村上隆啓,石田義久

    第43回自動制御連合講演会  2000.11  計測自動制御学会

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    Venue:愛媛  

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  • MUSICアルゴリズムを用いた音声の基本周波数の推定

    村上隆啓,石田義久

    第19回シミュレーション・テクノロジー・コンファレンス  2000.6  日本シミュレーション学会

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    Venue:東京  

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Awards

  • 電気学会優秀論文発表賞

    2024.3   電気学会   粒子群最適化を用いた電気車の空転制御のパラメータ調整

    丹治寛樹,山下道寛,村上隆啓

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  • 電気学会 電子・情報・システム部門 技術委員会奨励賞

    2022.1   電気学会 電子・情報・システム部門   最尤推定に基づく1ch到来方向推定法の音声信号への拡張

    池内柾,小野寺章吾,丹治寛樹,村上隆啓

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  • 電子情報通信学会 東京支部学生奨励賞

    2021.3   電子情報通信学会 東京支部   最尤推定に基づいたノッチ周波数推定法におけるステップサイズパラメータについての検討

    松尾宇紘,丹治寛樹,村上隆啓

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  • 電気学会 電子・情報・システム部門 技術委員会奨励賞

    2019.2   電気学会 電子・情報・システム部門   観測雑音に双曲線正割分布を用いた上界最小化に基づくカルマンフィルタ

    丹治寛樹,村上隆啓,鎌田弘之

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  • 電気学会 電子・情報・システム部門 研究会奨励賞

    2018.9   電気学会 電子・情報・システム部門   位相アンラップ問題が発生しないPhase Vocoderに対する雑音の影響の調査

    米口遼一,村上隆啓

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  • 電子情報通信学会 東京支部学生奨励賞

    2018.3   電子情報通信学会 東京支部   聴覚フィードバックのための気導音と骨導音間の遅延時間の測定

    落合裕貴,村上隆啓

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  • CSPA 2016 Best Paper Award

    2016.3   12th IEEE Colloquium on Signal Processing and its Applications (CSPA 2016)   Nonparametric Bayesian models for AR and ARX identification

    Hiroki Tanji, Ryo Tanaka, Takahiro Murakami, Yoshihisa Ishida

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    Award type:Award from international society, conference, symposium, etc. 

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  • AIMS 2015 Best Paper Award

    2015.12   IEEE 3rd International Conference on Artificial Intelligence, Modelling and Simulation (AIMS 2015)   Model matching control based on discrete-time improved ADRC considering plant input-side disturbance

    Ryo Tanaka, Takahiro Murakami, Yoshihisa Ishida

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    Award type:Award from international society, conference, symposium, etc. 

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  • FIT奨励賞

    2015.9   第14回情報科学技術フォーラム(FIT2015)   FOBOSを用いたスパース性を持つインパルス応答の推定

    竒藤圭人,田中諒,村上隆啓

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    Award type:Award from Japanese society, conference, symposium, etc.  Country/Region:Japan

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  • ISA Transactions Best Paper Award

    2014.10   International Society of Automation (ISA)   Controller design approach based on linear programming

    Ryo Tanaka, Hiroki Shibasaki, Hiromitsu Ogawa, Takahiro Murakami, Yoshihisa Ishida

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    Award type:Honored in official journal of a scientific society, scientific journal 

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  • SISA 2013 Best Paper Award

    2013.9   2013 International Workshop on Smart Info-Media Systems in Asia (SISA 2013)   Convolutive NMF based on squared Euclidean distance, KL divergence, and IS divergence

    Hiroki Tanji, Ryo Tanaka, Kyohei Tabata, Yoshito Iseki, Takahiro Murakami, Yoshihisa Ishida

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Research Projects

  • An application of time-scale and pitch-scale modification to hearing aids for elderly people

    Grant number:24K15867  2024.4 - 2027.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

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    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

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  • 遅延聴覚フィードバックが与える影響の客観的評価と老人性難聴用補聴器への応用

    Grant number:20K12745  2020.4

    基盤研究(C) 

    村上隆啓

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    Authorship:Principal investigator 

    Grant amount:\3250000 ( Direct Cost: \2500000 、 Indirect Cost:\750000 )

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  • Age-related changes in permissible delay times of hearing aids and its application for hearing aids for presbycusis

    Grant number:17K18165  2017.4 - 2019.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (B)

    Murakami Takahiro, AOKI Soichiro, YONEGUCHI Ryoichi, OHASHI Saki, TODA Yuki, OCHIAI Yuki, SHIGEMATSU Hayato

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    Authorship:Principal investigator 

    Grant amount:\3380000 ( Direct Cost: \2600000 、 Indirect Cost:\780000 )

    Due to the limitation about delay times between input and output, it is quite difficult to improve performance of hearing aids. Previous research, however, suggested that permissible delay times of hearing aids for presbycusis (or age-related hearing loss) could be extended to a certain degree.
    In this KAKENHI project, the age-related changes in permissible delay times of hearing aids have been investigated in detail. By this investigation, it has also been revealed that some compensation is necessary for acoustic signals to investigate efficiently. In relation to the compensation of acoustic signals, several algorithms for estimating parameters of acoustic systems have been developed. In addition, a phase vocoder, which can be available for the compensation, has been improved by removing the well-known phase unwrapping problem.

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  • 補聴器における自動音量変換の限界

    2016.4 - 2017.3

    明治大学  若手研究

    村上隆啓

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    Authorship:Principal investigator  Grant type:Competitive

    Grant amount:\650000 ( Direct Cost: \650000 )

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  • Spectrum conversion for presbycusis

    Grant number:26870629  2014.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (B)

    Murakami Takahiro, OTA Anri, KITO Keito, FUJITA Kodai, MUKAE Junpei

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    Authorship:Principal investigator 

    Grant amount:\2990000 ( Direct Cost: \2300000 、 Indirect Cost:\690000 )

    In presbycusis (or age-related hearing loss), it is known that hearing loss at relatively high frequency bands is noticeable in comparison with that at low frequency bands. This KAKENHI project is aimed to improve the performance of the conventional spectrum conversion that is a technology for moving the high frequency components of a sound signal to the low frequency bands. For such a purpose, an algorithm for determining a parameter that is necessary to improve the performance of the spectrum conversion has been developed. In addition, the conventional method for estimating spectra has been generalized and consequently a limitation of window functions, which was intrinsic in the conventional algorithm, has been removed.

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  • マイクロホンアレーを用いた信号分離フィルタに関する研究

    Grant number:06J01250  2006.4 - 2009.3

    日本学術振興会  特別研究員奨励費  特別研究員奨励費

    村上隆啓

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    Authorship:Principal investigator 

    Grant amount:\3400000 ( Direct Cost: \3400000 )

    畳み込み混合モデルにおけるブラインド信号分離(BSS)問題に関する研究では,時間領域におけるこの問題の最適解が,独立成分分析(ICA)問題における局所解の中に含まれることを証明した.時間領域BSS問題へのアプローチとして,従来から多次元ICAとよばれる枠組みで解決しようという試みが数多くなされてきた.しかし,多次元ICA問題には複数の望まない局所解が存在するため,最適解を得る手法が確立していなかった.一方で,従来から知られているICA手法を多次元ICA問題に適用すると,最適解と思われる解に未知のフィルタをかけて順序をランダムに並べ替えたものが得られることが経験的に知られていた.本研究では,多次元ICA問題の最適解および最適解に未知のフィルタをかけてランダムに並び替えたものが,多次元ICA問題をICA問題として扱ったときに得られる局所解の中に含まれることを証明した.これによって,今までは経験的であった多次元ICA問題のICA手法を用いた解法に数学的裏づけを与えた.
    また,時間領域BSS問題と関連して昨年度に提案した誤差最小化フィルタ(EMF)に関する研究では,EMFの数学的性質を明らかにした.EMFは,2つの観測信号に何らかのフィルタをかけて得られる出力間の差が最小となるように設計したフィルタである.本研究では,観測信号を様々な条件下でモデル化し,それぞれの条件におけるEMF出力間の差の振る舞いを相関係数の観点から解析した.その結果,何らかの原信号が未知の経路を通過して観測されたときに,そのEMF出力間の2乗誤差が原信号間の相関係数を表していることが示された.

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  • 両耳受聴音声を用いた音声強調とその応用に関する研究

    Grant number:02J06340  2002.4 - 2005.3

    特別研究員奨励費 

    村上隆啓

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    Authorship:Principal investigator 

    Grant amount:\3000000 ( Direct Cost: \3000000 )

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  • System identification for measurement of an acoustic impulse response

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    Authorship:Principal investigator  Grant type:Competitive

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  • Signal separation for a super directional microphone array

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    Authorship:Principal investigator  Grant type:Competitive

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  • Pitch estimation for automatic music transcription

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    Authorship:Principal investigator  Grant type:Competitive

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  • Time-scale/pitch-scale modification for the elderly

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    Authorship:Principal investigator  Grant type:Competitive

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