FURUYA Ken

FacultyFaculty of Science and Technology
PositionProfessor
 

Profile

Faculty

    Faculty of Science and Technology, Department of Computer Science and Intelligent Systems/Intelligent SystemsProfessor

Name

    FURUYA Ken

Degree(1)

  • Ph. D. in Design, 九州大学, Dec. 2005

Address

    700 Dannoharu, Oita, Japan

Education

Classes

  • 2002, Electroacoustics
  • 2003, Electroacoustics
  • 2004, Electroacoustics
  • 2005, Electroacoustics
  • 2006, Electroacoustics
  • 2007, Electroacoustics
  • 2008, Multimedia
  • 2009, Music and Audio Processing
  • 2009, Multimedia
  • 2010, Multimedia
  • 2011, Multimedia
  • 2012, Multimedia
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013
  • 2013

Research Achievements

Field of Study

    Intelligent informatics

Research content keyword

    Acoustics, Speech, Microphone Array, Loudspeaker Array

Research Title

  • Improving speech enhancement using soft-constrained inverse filter in noisy reverberant conditions, A speech enhancement method is presented for noisy reverberant conditions, such as hands-free teleconferencing and videoconferencing. This method introduces the constraint of minimizing the

Papers

  • 1990, Principle of sound reception with spatial separability, 日本音響学会誌, 1990
  • 1990, A new Principle of Sound Reception with Spatial Separability, Acustica, 1990
  • 1991, Effects of Finite Register Length in the Fast Hartley Transform, 電子情報通信学会論文誌, 1991
  • 1994, Calculation of room impulse responses by treating multiple diffraction as a chain of linear filtering processes, Proc. of the Sabin Centennial Symposium, 1994
  • 1997, Two-channel blind deconvolution for nonminimum phase impulse responses, Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, 1997
  • 1997, Two-channel blind deconvolution for nonminimum phase FIR systems, IEICE Trans. Fundamentals, 1997
  • 1998, Compensation of speaker directivity in speech recognition using HMM composition, Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, 1998
  • 2000, Mechanism of the sweep sounds perceived in a regular-shaped reverberation room, J. Acoust. Soc. Jpn, 2000
  • 2000, Mechanism of the low speed sweep sound perceived in a regular-shaped reverberation room, J. Acoust. Soc. Jpn., 2000
  • 2001, Noise reduction and dereverberation using correlation matrix based on the multiple-input/output inverse-filtering theorem (MINT), Proc. Workshop on Hands-Free Speech Communication, 2001
  • 2001, Sound source segregation based on estimating incident angle for hands-free speech recognition, Proc. Workshop on Hands-Free Speech Communication, 2001
  • 2001, Improvement of Sound Deterioration Using Filter-and-Sum Array for Near Sound Field, 電子情報通信学会論文誌, 2001
  • 2002, Sweeping echoes perceived in a regularly shaped reverberation room, J. Acoust .Soc. Am., 2002
  • 2002, Sweeping echoes in two-dimensional reverberant space, Acoust. Sci., 2002
  • 2002, Real time source separation based on sound localization in a reverberant environment, IEEE International Workshop on  Neural Networks for Signal Processing, 2002
  • 2002, Talker-Tracking Microphone Array for Teleconferencing Systems, AES 113th Convention, 2002
  • 2003, An adaptive microphone array using multiple fictitious sources, 電子情報通信学会論文誌, 2003
  • 2003, A blind source localization by using freely positioned microphones, 電子情報通信学会論文誌, 2003
  • 2003, An adaptive microphone array for howling cancellation, J. Acoust. Soc. Jpn, 2003
  • 2004, A microphone array for howling cancellation, 日本音響学会誌, 2004
  • 2004, A microphne array system with echo canceller, 電子情報通信学会論文誌, 2004
  • 2004, Improvement of source separation method SAFIA under reverberation condition, 電子情報通信学会論文誌, 2004
  • 2004, A microphne array system for directional automatic gain control, 電子情報通信学会論文誌, 2004
  • 2005, Modifying SAFIA: separation of the target source close to the microphones and noise sources far from the microphones, 電子情報通信学会論文誌, 2005
  • 2005, A hands-free unit with adaptive microphone array for directional AGC, Proc. International Workshop on Acoustic Echo and Noise Control, 2005
  • 2005, Noise Reduction Method Based on SAFIA for Formula 1 Car Racing, Proc. International Workshop on Acoustic Echo and Noise Control, 2005
  • 2005, Dereverberation using speech spectrum whitening filters and correlation matrix between input channels, 電子情報通信学会論文誌, 2005
  • 2006, FFT-based fast conjugate gradient method for real-time dereverberation, 電子情報通信学会論文誌, 2006
  • 2006, Speech Dereverberation by Combining MINT-Based Blind Deconvolution and Modified Spectral Subtraction, Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2006
  • 2006, Enhancement of Sound Source Surrounded by Ambient Noise Using Pair of Microphone Arrays, Proc. International Workshop on Acoustic Echo and Noise Control, 2006
  • 2006, Hybrid Dereverberation Using Blind Deconvolution and Spectral Subtraction to Compensate for Motion of Source, Proc. InternationalWorkshop on Acoustic Echo and Noise Control, 2006
  • 2006, A method and efficiency of transforming auditory signala into vibrations for perception by hearing-impaired people, 電子情報通信学会論文誌, 2006
  • 2007, Robust speech dereverberation using multichannel blind deconvolution with spectral subtraction, IEEE Trans. On Audio, Speech, and Language Processing, 2007
  • 2007, System and effiency of transforming auditory signals into vibrations under noisy enviroment for hearing-impaired people, 2007
  • 2007, An approach to solve local minimum problem in sound source and microphone localization, IEICE Trans. Fundamentals, 2007
  • 2008, Enhancement of sound sources located within a particular area using a pair of small microphone arrays, IEICE Trans. Fundamentals, 2008
  • 2008, Sound image locaalization by using cross-talk cancellation, 電子情報通信学会論文誌, 2008
  • 2008, A Hands-Free Unit with Noise Reduction by Using Adaptive Beamformer, IEEE Trans. on Consumer Electronics, 2008
  • 2008, Enhancement of Sounds in a Specific Directional Area using Power Spectra estimated from Multiple Beamforming Outputs, Proc. Joint Workshop on Hands-free Speech Communication and Microphone Arrays, 2008
  • 2008, Factor analysis of speech quality improved by dereverberation processing, 電子情報通信学会論文誌, 2008
  • 2008, Noise robust speech dereverberation using constrained inverse filter, Proc. Interspeech, 2008
  • 2008, Sound source localization by using freely positioned multiple microphone-arrays and distance-measuring loudspeakers, 電子情報通信学会論文誌, 2008
  • 2009, Speech enhancement in a 2-dimensional area based on power spectrum estimation of multiple areas with investigation of existence of active sources, Proc. Interspeech 2009, 2009
  • 2010, Estimation of sound source orientation using eigenspace of spatial correlation matrix, Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2010
  • 2010, Estimating direct-to-reverberation energy ratio based on spatial correlation model segregating direct sound and reverberation, Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2010
  • 2010, Improving speech enhancement using soft-constrained inverse filter in noisy reverberant conditions, 電子情報通信学会論文誌, 2010
  • 2010, Inverse wave propagation in wave field synthesis, 40th International Conference of Audio Engineering Society, 2010
  • 2011, Improving Power Spectra Estimation in 2-Dimensional Areas Using Number of Active Sound Sources, IEICE Trans. Fundamentals, 2011
  • 2011, Measuring Sweeping Echoes in Rectangular Cross-Section Reverberant Fields, Acta Acustica, 2011
  • 2011, A Design of multipole loudspeaker array based on spherical harmonic expansion, Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2011
  • 2011, Inverse Wave Propagation for Reproducing Virtual Sources in front of Loudspeaker Array, Proc. The 19th European Signal Processing Conference EUSIPCO, 2011
  • 2011, Sound Field Recording and Reproduction Using Transform Filter Designed in Spatio-Temporal Frequency Domain, Proc. AES 131th Convention, 2011
  • 2011, Design of the transform filter for sound field reproduction using a pair of microphone and loudspeaker array, Proc.IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, 2011
  • 2011, Evanecentwave reproduction using linear arrays of loud speakers, Proc.IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, 2011
  • 2011, Evaluating small endfire loudspeaker array under various reverberations, Acoust. Sci. & Tech., 2011
  • 2011, Estimating Direct-to-Reverberant Energy Ratio Using D/R Spatial Correlation Matrix Model, IEEE Trans. on Audio, Speech, and Language Processing, 2011
  • 2012, Super-directive beamforming using microphone array and single reflector, Proc. IEEE International Conference on Consumer Electronics, 2012
  • 2012, Telescopic microphone array using reflector for segregating target source from noises in same direction, Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2012
  • 2012, Diffused sensing for sharp directivity microphone array, Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2012
  • 2012, Design of transform filter for reproducing arbitrarily shifted sound field using phase-shift of spatio-temporal frequency, Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2012
  • 2012, Localized sound reproduction using circular loudspeaker array based on acoustic evanescent wave, Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2012
  • 2012, Reproducing Virtual Sound Sources in Front of a Loudspeaker Array Using Inverse Wave Propagator, IEEE Trans. on Audio, Speech, and Language Processing, 2012
  • 2012, Sound field reproduction method in spatio-temporal frequency domain considering directivity of loudspeakers, Proc. AES 132th Convention, 2012
  • 2012, Posterior Residual Echo Canceling and its Complexity Reduction in the Wave Domain, Proc. International Workshop on Acoustic Signal Enhancement, 2012
  • 2012, Estimation of Direct-to-Reverberation Energy Ratio Based On Isotropic and Homogeneous Propagation Model, Proc. International Workshop on Acoustic Signal Enhancement, 2012
  • 2012, Angular region-wise speech enhancement for hands-free speakerphone, 1st IEEE Global Conference on Consumer Electronics 2012, GCCE 2012, 2012
  • 2012, Angular region-wise speech enhancement for hands-free speakerphone, IEEE Transactions on Consumer Electronics, 2012
  • 2013, Analytical approach to wave field reconstruction filtering in spatio-temporal frequency domain, IEEE Transactions on Audio, Speech and Language Processing, 2013
  • 2013, Evaluation of Microphone Array Based on Diffused Sensing with Various Filter Design Methods, Proc. The 21th European Signal Processing Conference EUSIPCO, 2013
  • 2013, Improvement using circular harmonics beamforming on reverberation problem of wave field reconstruction filtering, Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2013
  • 2013, Sound field reproduction using multiple linear arrays based on wave field reconstruction filtering in helicalwave spectrum domain, Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2013
  • 2013, Underdetermined Sound Source Separation Using Power Spectrum Density Estimated by Combination of Directivity Gain, IEEE Trans. on Audio, Speech, and Language Processing, 2013
  • 2013, Analytical Approach to Wave Field Reconstruction Filtering in Spatio-Temporal Frequency Domain, IEEE Trans. on Audio, Speech, and Language Processing, 2013
  • 2013, Sharp directive beamforming using microphone array and planar reflector, Acoust. Sci. & Tech., 2013
  • 2013, Diffused sensing for sharp directive beamforming, IEEE Trans. on Audio, Speech, and Language Processing, 2013
  • 2013, An estimation method of sound source orientation using eigenspace variation of spatial correlation matrix, IEICE Trans. Fundamentals, 2013
  • 2013, Directivity synthesis using multipole sources based on spherical harmonic expansion, 日本音響学会誌, 2013
  • 2014, Close-talking spherical microphone array using sound pressure interpolation based on spherical harmonic expansion, Proc. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2014
  • 2014, Real-time sound field transmission system by using wave field reconstruction filter and its evaluation, IEICE Trans. Fundamentals, 2014
  • 2014, Sound field simulation for circular array based on spatial circular convolution, Acoust. Sci. & Tech., 2014
  • 2014, Close-talking microphone arrays based on spherical harmonic expansion, 電子情報通信学会論文誌A, 2014
  • 2014, Wave Field Reconstruction Filtering in Cylindrical Harmonic Domain for With-Height Recording and Reproduction, IEEE Trans. on Audio, Speech, and Language Processing, 2014

Industrial Property

  • 1997, Sound pressure control system, 14 Nov. 1997
  • 1998, Sound field control method, 03 Apr. 1998
  • 2002, Sound Receiving method, 26 Jul. 2002
  • 2002, Sound localization method, 26 Jul. 2002
  • 2002, Receive status detection method, 23 Aug. 2002
  • 2002, Acoustic echo canceller, 04 Oct. 2002
  • 2002, Howlling canceller, 06 Dec. 2002
  • 2003, Microphone sysytem, 20 Mar. 2003
  • 2004, Microphone sysytem, 23 Jan. 2004
  • 2004, Sound source directivity compensation method, 02 Apr. 2004
  • 2004, Speech coding method, 23 Jul. 2004
  • 2004, Microphone sysytem, 06 Aug. 2004
  • 2004, Microphone sysytem, 06 Aug. 2004
  • 2004, Microphone sysytem, 20 Aug. 2004
  • 2004, Microphone sysytem, 24 Sep. 2004
  • 2005, Dereverneration method, 25 Feb. 2005
  • 2005, Sound reproduction method, 15 Apr. 2005
  • 2005, Sound effect generator, 08 Jul. 2005
  • 2005, Microphone sysytem, 09 Sep. 2005
  • 2005, Sound sourace localization method, 16 Sep. 2005
  • 2005, Zoom estimation method, 11 Nov. 2005
  • 2006, Microphone sysytem, 03 Feb. 2006
  • 2006, Microphone sysytem, 20 Feb. 2006
  • 2006, Signal separation system, 10 Mar. 2006
  • 2006, Speech processing system, 31 Mar. 2006
  • 2006, Microphone sysytem, 10 Nov. 2006
  • 2007, Acoustic echo canceller, 15 Jun. 2007
  • 2008, Microphone sysytem, 04 Apr. 2008
  • 2008, Microphone sysytem, 25 Apr. 2008
  • 2008, Microphone sysytem, 02 May 2008
  • 2008, Signal separation system, 22 Aug. 2008
  • 2008, Multichannel audio coding method, 26 Sep. 2008
  • 2009, Signal separation system, 23 Jan. 2009
  • 2009, Noise suppression method, 30 Jan. 2009
  • 2009, Microphone sysytem, 24 Apr. 2009
  • 2009, Acoustic coupling ectimation method, 02 Oct. 2009
  • 2009, Howlling canceller, 02 Oct. 2009
  • 2009, Periodic noise suppression method, 27 Nov. 2009
  • 2009, Nonstationaly noise detection method, 27 Nov. 2009
  • 2009, Acoustic echo canceller, 27 Nov. 2009
  • 2009, Sound sourace localization method, 11 Dec. 2009
  • 2010, Microphone sysytem, 15 Jan. 2010
  • 2010, Microphone sysytem, 12 Mar. 2010
  • 2010, Sound localization enhancement method, 16 Apr. 2010
  • 2010, Microphone sysytem, 28 May 2010
  • 2010, Signal separation system, 18 Jun. 2010
  • 2010, Double talk detection method, 02 Jul. 2010
  • 2010, Howlling canceller, 16 Jul. 2010
  • 2010, Acoustic coupling ectimation method, 30 Jul. 2010
  • 2010, Microphone sysytem, 13 Aug. 2010
  • 2010, Signal separation system, 22 Oct. 2010
  • 2010, Microphone sysytem, 29 Oct. 2010
  • 2011, Noise suppression method, 11 Mar. 2011
  • 2011, Acoustic echo canceller, 11 Mar. 2011
  • 2011, Acoustic echo canceller, 25 Mar. 2011
  • 2011, Directianal microphone system, 15 Apr. 2011
  • 2011, Microphone sysytem, 22 Jul. 2011
  • 2011, Microphone sysytem, 16 Dec. 2011
  • 2012, Microphone sysytem, 17 Feb. 2012
  • 2012, Directianal microphone system, 17 Feb. 2012
  • 2012, Signal separation system, 24 Feb. 2012
  • 2012, Up sampling method, 16 Mar. 2012
  • 2012, Sound reproduction method, 16 Mar. 2012
  • 2012, Sound reproduction method, 16 Mar. 2012
  • 2012, Distance measurement method, 30 Mar. 2012
  • 2012, Microphone sysytem, 13 Apr. 2012
  • 2012, Microphone sysytem, 22 Jun. 2012
  • 2012, Microphone sysytem, 10 Aug. 2012
  • 2012, Signal enhanchment method, 17 Aug. 2012
  • 2012, Direct-to-reveberation ratio estimation method, 07 Sep. 2012
  • 2012, Noise suppression method, 30 Nov. 2012
  • 2012, Audio signal transmission method, 07 Dec. 2012
  • 2012, Sound reproduction method, 28 Dec. 2012
  • 2013, Reflection sound estimation method, 11 Jan. 2013
  • 2013, Speech capture method, 11 Jan. 2013
  • 2013, Up sampling method, 08 Feb. 2013
  • 2013, Estimation system of sound reflection information, 08 Mar. 2013
  • 2013, Sound localization system, 22 Mar. 2013
  • 2013, Teleconferencing system, 22 Mar. 2013
  • 2013, Estimation system of speaker's head-direction, 05 Apr. 2013
  • 2013, Estimation system of speaker's head-direction, 05 Apr. 2013
  • 2013, Estimation system of speaker's head-direction, 05 Apr. 2013
  • 2013, Estimation system of speaker's head-direction, 05 Apr. 2013
  • 2013, Estimation system of sound reflection information, 07 Jun. 2013
  • 2013, Sound reproduction system, 26 Jul. 2013
  • 2013, Arrangement method of refrector in filter design, 09 Aug. 2013
  • 2013, Spot sound reproduction system, 16 Aug. 2013
  • 2013, Sound field capture and reproduction system, 23 Aug. 2013
  • 2013, Sound field capture and reproduction system, 23 Aug. 2013
  • 2013, Zooming microphone system, 25 Oct. 2013
  • 2013, Spot sound reproduction system, 22 Nov. 2013
  • 2013, Sound source extraction system, 27 Dec. 2013
  • 2014, Spot sound reproduction system, 17 Jan. 2014
  • 2014, Spot sound reproduction system, 17 Jan. 2014
  • 2014, Norrow directional sound reproduction system, 28 Feb. 2014
  • 2014, Spot sound reproduction system, 28 Feb. 2014
  • 2014, Speech enhancement system, 28 Feb. 2014
  • 2014, Sound reproduction system, 14 Mar. 2014
  • 2014, Spot sound reproduction system, 28 Mar. 2014
  • 2014, Speech capture system, 04 Apr. 2014
  • 2014, Sound field capture and reproduction system, 04 Apr. 2014
  • 2014, Impulse response mesurement, 25 Apr. 2014
  • 2014, Sound localization system, 25 Jul. 2014
  • 2014, Sound field capture and reproduction system, 25 Jul. 2014
  • 2014, Spot sound reproduction system, 15 Aug. 2014
  • 2014, Sound field capture and reproduction system, 29 Aug. 2014

Prizes

  • The Sato Prize for Paper, Acousticaal Society of Japan, Mar. 1991
  • The best paper award of Human communication, Group of Human Communication, the Institute of Electronics, Information and Communication Engineers, Mar. 2005

Learned Societies to Belong

  • The Institute of electronics, information and communication engineers
  • Acoustical society of Japan
  • The Institute of Electrical and Electronics Engineers
  • Acoustical society of America
  • Audio Engineering Society

Grant-in-aid for Scientific Research

  • Robust speech dereverberation against speaker-moving for hearing aid system, 2013.4~2016.3

Collaborative Research and Sponsored Research

  • 2012, 多チャンネルマイクロホン・スピーカ特性の計測技術の調査研究


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