Akihiko SUGIYAMA


Gain Relaxation: A Solution to Overlooked Performance Degradation in Speech Recognition with Signal Enhancement
Ryoji MIYAHARA Akihiko SUGIYAMA 
Publication:   
Publication Date: 2018/11/01
Vol. E101-A  No. 11  pp. 1832-1840
Type of Manuscript:  Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: Digital Signal Processing, Speech and Hearing
Keyword: 
signal enhancementspeech recognitionnoise suppressorbeamformerphase difference
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A Stereo Wind-Noise Suppressor with Null Beamforming and Frequency-Domain Noise Averaging
Masanori KATO Akihiko SUGIYAMA Tatsuya KOMATSU 
Publication:   
Publication Date: 2018/10/01
Vol. E101-A  No. 10  pp. 1631-1637
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
wind noisenoise suppressorstereonull beamformingfrequency-domain averaging
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A Directional Noise Suppressor with a Specified Constant Beamwidth
Ryoji MIYAHARA Akihiko SUGIYAMA 
Publication:   
Publication Date: 2018/10/01
Vol. E101-A  No. 10  pp. 1616-1624
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
beamformernoise suppressorphase differenceDOAdirectional gainbeamwidth
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A Wind-Noise Suppressor with SNR Based Wind-Noise Detection and Speech-Wind Discrimination
Masanori KATO Akihiko SUGIYAMA 
Publication:   
Publication Date: 2018/10/01
Vol. E101-A  No. 10  pp. 1638-1645
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
wind noisenoise suppressorSNR based detectionspectral gain modificationspeech-wind discrimination
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A Single-Chip Speech Dialogue Module and Its Evaluation on a Personal Robot, PaPeRo-Mini
Miki SATO Toru IWASAWA Akihiko SUGIYAMA Toshihiro NISHIZAWA Yosuke TAKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/01/01
Vol. E93-A  No. 1  pp. 261-271
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
speech recognitionDOA estimationnoise cancellationmicrophone arrayecho cancellationspeech dialogue module
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A Low Complexity Noise Suppressor with Hybrid Filterbanks and Adaptive Time-Frequency Tiling
Osamu SHIMADA Akihiko SUGIYAMA Toshiyuki NOMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/01/01
Vol. E93-A  No. 1  pp. 254-260
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
speech enhancementnoise suppressionlow complexityhybrid filterbankadaptive time-frequency tiling
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FOREWORD
Akihiko SUGIYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/08/01
Vol. E92-A  No. 8  pp. 1872-1873
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
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Nonlinear Acoustic Echo Suppressor Based on Spectral Correlation between Residual Echo and Echo Replica
Osamu HOSHUYAMA Akihiko SUGIYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/11/01
Vol. E89-A  No. 11  pp. 3254-3259
Type of Manuscript:  PAPER
Category: Engineering Acoustics
Keyword: 
nonlinear echoecho cancellerecho suppressor
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A Stereo Echo Canceler with Input Slides and Counter-Lateralization
Akihiko SUGIYAMA Yann JONCOUR Akihiro HIRANO Takao NISHITANI Gerard FAUCON 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/06/01
Vol. E89-A  No. 6  pp. 1776-1787
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
echo cancelerstereoidentificationadaptive filter
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An Adaptive Noise Canceller with Low Signal-Distortion Based on Variable Stepsize Subfilters for Human-Robot Communication
Miki SATO Akihiko SUGIYAMA Shin'ichi OHNAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/08/01
Vol. E88-A  No. 8  pp. 2055-2061
Type of Manuscript:  Special Section PAPER (Special Section on Papers Selected from the 19th Symposium on Signal Processing)
Category: Digital Signal Processing
Keyword: 
noise cancellerdistortioncrosstalkadaptive filteralgorithmspeech recognitionhuman-robot communication
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Near-Field Sound-Source Localization Based on a Signed Binary Code
Miki SATO Akihiko SUGIYAMA Osamu HOSHUYAMA Nobuyuki YAMASHITA Yoshihiro FUJITA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/08/01
Vol. E88-A  No. 8  pp. 2078-2086
Type of Manuscript:  Special Section PAPER (Special Section on Papers Selected from the 19th Symposium on Signal Processing)
Category: Digital Signal Processing
Keyword: 
source localizationDOA estimationnear-fieldsignal processormicrophone arrayrobot
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Noise Suppression with High Speech Quality Based on Weighted Noise Estimation and MMSE STSA
Masanori KATO Akihiko SUGIYAMA Masahiro SERIZAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1710-1718
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
noise suppressionspeech enhancementnoise estimationshort time spectral amplitude
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A New Adaptation-Mode Control Based on Cross Correlation for a Robust Adaptive Microphone Array
Osamu HOSHUYAMA Brigitte BEGASSE Akihiko SUGIYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/02/01
Vol. E84-A  No. 2  pp. 406-413
Type of Manuscript:  Special Section PAPER (Special Section on Noise Cancellation and Reduction Techniques)
Category: Microphone Array
Keyword: 
microphone arraybeamformingadaptive signal processingnoise reduction
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An Adaptive Noise Canceller with Low Signal-Distortion in the Presence of Crosstalk
Shigeji IKEDA Akihiko SUGIYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/08/25
Vol. E82-A  No. 8  pp. 1517-1525
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
noisenoise cancellerdistortioncrosstalkadaptive filteralgorithmspeech coding
 Summary | Full Text:PDF

A Robust Adaptive Beamformer with a Blocking Matrix Using Coefficient-Constrained Adaptive Filters
Osamu HOSHUYAMA Akihiko SUGIYAMA Akihiro HIRANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/04/25
Vol. E82-A  No. 4  pp. 640-647
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
beamformingmicrophone arrayadaptive signal processingnoise reduction
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Cancellation of Multiple Echoes by Multiple Autonomic and Distributed Echo Canceler Units
Akihiko SUGIYAMA Kenji ANZAI Hiroshi SATO Akihiro HIRANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/11/25
Vol. E81-A  No. 11  pp. 2361-2369
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
adaptive filterechomultiple echoesecho canceler sparse-tapalgorithmLSI
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A Fast Timing Recovery Method with a Decision Feedback Equalizer for Baudrate Sampling
Akihiko SUGIYAMA Tomokazu ITO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/08/25
Vol. E79-A  No. 8  pp. 1267-1273
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
sampling phasetiming recoverybaudrate samplingdecision feedback equalizerecho canceler
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A Modified Normalized LMS Algorithm Based on a Long-Term Average of the Reference Signal Power
Akihiro HIRANO Akihiko SUGIYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1995/08/25
Vol. E78-A  No. 8  pp. 915-920
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
echo cancelleradaptive signal processingdigital signal processing
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A Subband Adaptive Filtering Algorithm with Adaptive Intersubband Tap-Assignment
Akihiko SUGIYAMA Akihiro HIRANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/09/25
Vol. E77-A  No. 9  pp. 1432-1438
Type of Manuscript:  Special Section PAPER (Special Section of Papers Selected from the 8th Digital Signal Processing Symposium)
Category: Adaptive Digital Filters
Keyword: 
adaptive filtersubband filteringfast convergenceecho cancellation
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A Fast Convergence Algorithm for Adaptive FIR Filters with Sparse Taps
Akihiko SUGIYAMA Shigeji IKEDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/04/25
Vol. E77-A  No. 4  pp. 681-687
Type of Manuscript:  PAPER
Category: Adaptive Signal Processing
Keyword: 
adaptive filterfast convergenceflat delayecho cancellation
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Stochastic Gradient Algorithms with a Gradient-Adaptive and Limited Step-Size
Akihiko SUGIYAMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1994/03/25
Vol. E77-A  No. 3  pp. 534-538
Type of Manuscript:  PAPER
Category: Adaptive Signal Processing
Keyword: 
adaptive filterLMS algorithmstep sizefast convergencemisadjustmentinterferencerobustnessecho cancellation
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Automatic Tap Assignment in Sub-Band Adaptive Filter
Zhiqiang MA Kenji NAKAYAMA Akihiko SUGIYAMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/07/25
Vol. E76-B  No. 7  pp. 751-754
Type of Manuscript:  Special Section LETTER (Special Section of Letters Selected from the 1992 IEICE Fall Conference and the 1993 IEICE Spring Conference)
Category: 
Keyword: 
sub-bandadaptive filterfilter banknumber of tapssystem identificationnoise cancellerecho canceller
 Summary | Full Text:PDF