Hiroshi SARUWATARI


Voice Conversion Using Input-to-Output Highway Networks
Yuki SAITO Shinnosuke TAKAMICHI Hiroshi SARUWATARI 
Publication:   
Publication Date: 2017/08/01
Vol. E100-D  No. 8  pp. 1925-1928
Type of Manuscript:  LETTER
Category: Speech and Hearing
Keyword: 
statistical parametric speech synthesisDNN-based voice conversionhighway networksover-smoothing
 Summary | Full Text:PDF(557.9KB)

Music Signal Separation Based on Supervised Nonnegative Matrix Factorization with Orthogonality and Maximum-Divergence Penalties
Daichi KITAMURA Hiroshi SARUWATARI Kosuke YAGI Kiyohiro SHIKANO Yu TAKAHASHI Kazunobu KONDO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/05/01
Vol. E97-A  No. 5  pp. 1113-1118
Type of Manuscript:  LETTER
Category: Engineering Acoustics
Keyword: 
music signal separationnonnegative matrix factorizationsupervised method
 Summary | Full Text:PDF(3.8MB)

Speech Prior Estimation for Generalized Minimum Mean-Square Error Short-Time Spectral Amplitude Estimator
Ryo WAKISAKA Hiroshi SARUWATARI Kiyohiro SHIKANO Tomoya TAKATANI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/02/01
Vol. E95-A  No. 2  pp. 591-595
Type of Manuscript:  LETTER
Category: Engineering Acoustics
Keyword: 
generalized MMSE STSA estimatorspeech kurtosis estimationcumulant
 Summary | Full Text:PDF(331.5KB)

Theoretical Analysis of Amounts of Musical Noise and Speech Distortion in Structure-Generalized Parametric Blind Spatial Subtraction Array
Ryoichi MIYAZAKI Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/02/01
Vol. E95-A  No. 2  pp. 586-590
Type of Manuscript:  LETTER
Category: Engineering Acoustics
Keyword: 
speech enhancementmusical noisehigher-order statisticsspeech recognition performance
 Summary | Full Text:PDF(352.6KB)

Sound Field Reproduction by Wavefront Synthesis Using Directly Aligned Multi Point Control
Noriyoshi KAMADO Haruhide HOKARI Shoji SHIMADA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/03/01
Vol. E94-A  No. 3  pp. 907-920
Type of Manuscript:  PAPER
Category: Engineering Acoustics
Keyword: 
wavefront synthesiswavefront measurementimpulse responsemulti-point control
 Summary | Full Text:PDF(2.7MB)

Improvements of the One-to-Many Eigenvoice Conversion System
Yamato OHTANI Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/09/01
Vol. E93-D  No. 9  pp. 2491-2499
Type of Manuscript:  Special Section PAPER (Special Section on Processing Natural Speech Variability for Improved Verbal Human-Computer Interaction)
Category: Voice Conversion
Keyword: 
speech synthesiseigenvoice conversionSTRAIGHT mixed excitationglobal varianceadaptive training
 Summary | Full Text:PDF(1.1MB)

Esophageal Speech Enhancement Based on Statistical Voice Conversion with Gaussian Mixture Models
Hironori DOI Keigo NAKAMURA Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/09/01
Vol. E93-D  No. 9  pp. 2472-2482
Type of Manuscript:  Special Section PAPER (Special Section on Processing Natural Speech Variability for Improved Verbal Human-Computer Interaction)
Category: Voice Conversion
Keyword: 
laryngectomeesesophageal speechspeech enhancementvoice conversioneigenvoice conversion
 Summary | Full Text:PDF(848KB)

Evaluation of Extremely Small Sound Source Signals Used in Speaking-Aid System with Statistical Voice Conversion
Keigo NAKAMURA Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/07/01
Vol. E93-D  No. 7  pp. 1909-1917
Type of Manuscript:  PAPER
Category: Rehabilitation Engineering and Assistive Technology
Keyword: 
laryngectomeespeaking aidelectrolarynxvoice conversionNAMenhancing auditory feedback
 Summary | Full Text:PDF(536.9KB)

Adaptive Training for Voice Conversion Based on Eigenvoices
Yamato OHTANI Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2010/06/01
Vol. E93-D  No. 6  pp. 1589-1598
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
speech synthesisvoice conversionGaussian mixture modeleigenvoiceadaptive training
 Summary | Full Text:PDF(437.3KB)

Rapid Compensation of Temperature Fluctuation Effect for Multichannel Sound Field Reproduction System
Yuki YAI Shigeki MIYABE Hiroshi SARUWATARI Kiyohiro SHIKANO Yosuke TATEKURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/06/01
Vol. E91-A  No. 6  pp. 1329-1336
Type of Manuscript:  Special Section PAPER (Special Section on Acoustic Scene Analysis and Reproduction)
Category: 
Keyword: 
sound field controltemperature fluctuationcomputational efficiency
 Summary | Full Text:PDF(744.6KB)

Fast Convergence Blind Source Separation Using Frequency Subband Interpolation by Null Beamforming
Keiichi OSAKO Yoshimitsu MORI Yu TAKAHASHI Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/06/01
Vol. E91-A  No. 6  pp. 1357-1361
Type of Manuscript:  Special Section LETTER (Special Section on Acoustic Scene Analysis and Reproduction)
Category: 
Keyword: 
blind source separationindependent component analysisnull beamformingDOA estimation
 Summary | Full Text:PDF(546.4KB)

Development, Long-Term Operation and Portability of a Real-Environment Speech-Oriented Guidance System
Tobias CINCAREK Hiromichi KAWANAMI Ryuichi NISIMURA Akinobu LEE Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/03/01
Vol. E91-D  No. 3  pp. 576-587
Type of Manuscript:  Special Section PAPER (Special Section on Robust Speech Processing in Realistic Environments)
Category: Applications
Keyword: 
real environmentspeech-oriented guidance systemdevelopment simulationportabilityspeech recognizerquestion and answer database
 Summary | Full Text:PDF(906.5KB)

Building an Effective Speech Corpus by Utilizing Statistical Multidimensional Scaling Method
Goshu NAGINO Makoto SHOZAKAI Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/03/01
Vol. E91-D  No. 3  pp. 607-614
Type of Manuscript:  Special Section PAPER (Special Section on Robust Speech Processing in Realistic Environments)
Category: Corpus
Keyword: 
speech corpuscost effectivespeaker selectionacoustic modelstatistical MDS method
 Summary | Full Text:PDF(377.9KB)

Cost Reduction of Acoustic Modeling for Real-Environment Applications Using Unsupervised and Selective Training
Tobias CINCAREK Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/03/01
Vol. E91-D  No. 3  pp. 499-507
Type of Manuscript:  Special Section PAPER (Special Section on Robust Speech Processing in Realistic Environments)
Category: Acoustic Modeling
Keyword: 
ASR applicationreal-environmenttask-dependencyunsupervised trainingselective training
 Summary | Full Text:PDF(795.2KB)

Reducing Computation Time of the Rapid Unsupervised Speaker Adaptation Based on HMM-Sufficient Statistics
Randy GOMEZ Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2007/02/01
Vol. E90-D  No. 2  pp. 554-561
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
HMM-sufficient statisticsunsupervisedrapid adaptationspeech recognition
 Summary | Full Text:PDF(1.5MB)

Utterance-Based Selective Training for the Automatic Creation of Task-Dependent Acoustic Models
Tobias CINCAREK Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/03/01
Vol. E89-D  No. 3  pp. 962-969
Type of Manuscript:  Special Section PAPER (Special Section on Statistical Modeling for Speech Processing)
Category: Speech Recognition
Keyword: 
acoustic modelingtask-dependencydevelopment costsselective trainingsufficient statistics
 Summary | Full Text:PDF(623.9KB)

Improving Rapid Unsupervised Speaker Adaptation Based on HMM-Sufficient Statistics in Noisy Environments Using Multi-Template Models
Randy GOMEZ Akinobu LEE Tomoki TODA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/03/01
Vol. E89-D  No. 3  pp. 998-1005
Type of Manuscript:  Special Section PAPER (Special Section on Statistical Modeling for Speech Processing)
Category: Speech Recognition
Keyword: 
HMM-Sufficient Statisticsunsupervisedspeaker adaptationnoisy environments
 Summary | Full Text:PDF(940.5KB)

Interface for Barge-in Free Spoken Dialogue System Using Nullspace Based Sound Field Control and Beamforming
Shigeki MIYABE Hiroshi SARUWATARI Kiyohiro SHIKANO Yosuke TATEKURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/03/01
Vol. E89-A  No. 3  pp. 716-726
Type of Manuscript:  Special Section PAPER (Special Section on Multidimensional Signal Processing and Its Application)
Category: Speech/Audio Processing
Keyword: 
spoken dialogue systembarge-insound field controlbeamformingnullspace
 Summary | Full Text:PDF(720.9KB)

Subband-Based Blind Separation for Convolutive Mixtures of Speech
Shoko ARAKI Shoji MAKINO Robert AICHNER Tsuyoki NISHIKAWA Hiroshi SARUWATARI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/12/01
Vol. E88-A  No. 12  pp. 3593-3603
Type of Manuscript:  PAPER
Category: Engineering Acoustics
Keyword: 
blind source separationspeech separationconvolutive mixturessubband processingfrequency dependent processing
 Summary | Full Text:PDF(893.6KB)

Blind Separation and Deconvolution for Convolutive Mixture of Speech Combining SIMO-Model-Based ICA and Multichannel Inverse Filtering
Hiroshi SARUWATARI Hiroaki YAMAJO Tomoya TAKATANI Tsuyoki NISHIKAWA Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/09/01
Vol. E88-A  No. 9  pp. 2387-2400
Type of Manuscript:  PAPER
Category: Engineering Acoustics
Keyword: 
blind source separationblind deconvolutionindependent component analysisSIMO model
 Summary | Full Text:PDF(1MB)

A Self-Generator Method for Initial Filters of SIMO-ICA Applied to Blind Separation of Binaural Sound Mixtures
Tomoya TAKATANI Satoshi UKAI Tsuyoki NISHIKAWA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/07/01
Vol. E88-A  No. 7  pp. 1673-1682
Type of Manuscript:  Special Section PAPER (Special Section on Multi-channel Acoustic Signal Processing)
Category: Blind Source Separation
Keyword: 
blind source separationindependent component analysisSIMO-ICAself-generatorbinaural
 Summary | Full Text:PDF(1.2MB)

On-Line Relaxation Algorithm Applicable to Acoustic Fluctuation for Inverse Filter in Multichannel Sound Reproduction System
Yosuke TATEKURA Shigefumi URATA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/07/01
Vol. E88-A  No. 7  pp. 1747-1756
Type of Manuscript:  Special Section PAPER (Special Section on Multi-channel Acoustic Signal Processing)
Category: Sound Field Reproduction
Keyword: 
sound reproductionroom transfer functioninverse filterrelaxation of inverse filteron-line adaptation
 Summary | Full Text:PDF(725.8KB)

Blind Separation of Speech by Fixed-Point ICA with Source Adaptive Negentropy Approximation
Rajkishore PRASAD Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/07/01
Vol. E88-A  No. 7  pp. 1683-1692
Type of Manuscript:  Special Section PAPER (Special Section on Multi-channel Acoustic Signal Processing)
Category: Blind Source Separation
Keyword: 
blind separation of speechfrequency domain independent component analysisgeneralized Gaussian distributionnegentropy maximization
 Summary | Full Text:PDF(1.6MB)

Interface for Barge-in Free Spoken Dialogue System Combining Adaptive Sound Field Control and Microphone Array
Tatsunori ASAI Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/06/01
Vol. E88-A  No. 6  pp. 1613-1618
Type of Manuscript:  LETTER
Category: Speech and Hearing
Keyword: 
spoken dialogue systembarge-inadaptive sound field controlmicrophone arrayspeech recognition
 Summary | Full Text:PDF(1.3MB)

Designing Target Cost Function Based on Prosody of Speech Database
Kazuki ADACHI Tomoki TODA Hiromichi KAWANAMI Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2005/03/01
Vol. E88-D  No. 3  pp. 519-524
Type of Manuscript:  Special Section PAPER (Special Section on Corpus-Based Speech Technologies)
Category: Speech Synthesis and Prosody
Keyword: 
unit selection speech synthesisspeech databaseprosody modificationSTRAIGHTperceptual evaluation
 Summary | Full Text:PDF(614.1KB)

Multistage SIMO-Model-Based Blind Source Separation Combining Frequency-Domain ICA and Time-Domain ICA
Satoshi UKAI Tomoya TAKATANI Hiroshi SARUWATARI Kiyohiro SHIKANO Ryo MUKAI Hiroshi SAWADA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/03/01
Vol. E88-A  No. 3  pp. 642-650
Type of Manuscript:  Special Section PAPER (Special Section on Adaptive Signal Processing and Its Applications)
Category: 
Keyword: 
blind source separationmicrophone arrayindependent component analysisSIMO model
 Summary | Full Text:PDF(583.9KB)

Overdetermined Blind Separation for Real Convolutive Mixtures of Speech Based on Multistage ICA Using Subarray Processing
Tsuyoki NISHIKAWA Hiroshi ABE Hiroshi SARUWATARI Kiyohiro SHIKANO Atsunobu KAMINUMA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/08/01
Vol. E87-A  No. 8  pp. 1924-1932
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: Speech/Acoustic Signal Processing
Keyword: 
microphone arrayblind source separationindependent component analysissubarray processingconvolutive mixture
 Summary | Full Text:PDF(691.4KB)

High-Fidelity Blind Separation of Acoustic Signals Using SIMO-Model-Based Independent Component Analysis
Tomoya TAKATANI Tsuyoki NISHIKAWA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/08/01
Vol. E87-A  No. 8  pp. 2063-2072
Type of Manuscript:  PAPER
Category: Engineering Acoustics
Keyword: 
blind source separationmicrophone arrayindependent component analysisSIMO model
 Summary | Full Text:PDF(1MB)

Probability Distribution of Time-Series of Speech Spectral Components
Rajkishore PRASAD Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/03/01
Vol. E87-A  No. 3  pp. 584-597
Type of Manuscript:  Special Section PAPER (Special Section on Applications and Implementations of Digital Signal Processing)
Category: Audio/Speech Coding
Keyword: 
probabilistic modelingspectral components of speechmicrophone-arrayGGDFDICA
 Summary | Full Text:PDF(1.8MB)

Stable Learning Algorithm for Blind Separation of Temporally Correlated Acoustic Signals Combining Multistage ICA and Linear Prediction
Tsuyoki NISHIKAWA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/08/01
Vol. E86-A  No. 8  pp. 2028-2036
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
microphone arrayblind source separationindependent component analysislinear predictionwhitening
 Summary | Full Text:PDF(624.8KB)

Blind Source Separation of Acoustic Signals Based on Multistage ICA Combining Frequency-Domain ICA and Time-Domain ICA
Tsuyoki NISHIKAWA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/04/01
Vol. E86-A  No. 4  pp. 846-858
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
blind source separationtime-domain independent component analysisfrequency-domain independent component analysisreverberationmicrophone array
 Summary | Full Text:PDF(1.3MB)

Fast-Convergence Algorithm for Blind Source Separation Based on Array Signal Processing
Hiroshi SARUWATARI Toshiya KAWAMURA Tsuyoki NISHIKAWA Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/03/01
Vol. E86-A  No. 3  pp. 634-639
Type of Manuscript:  Special Section LETTER (Special Section on Blind Signal Processing: Independent Component Analysis and Signal Separation)
Category: Convolutive Systems
Keyword: 
blind source separationmicrophone arrayindependent component analysisbeamforming
 Summary | Full Text:PDF(1.2MB)

Sound Reproduction System Including Adaptive Compensation of Temperature Fluctuation Effect for Broad-Band Sound Control
Yosuke TATEKURA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/08/01
Vol. E85-A  No. 8  pp. 1851-1860
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: Applications of Signal Processing
Keyword: 
multichannel sound reproduction systeminverse filtercompensation of temperature fluctuationbroad-band sound control
 Summary | Full Text:PDF(504.1KB)

Direction of Arrival Estimation Using Nonlinear Microphone Array
Hidekazu KAMIYANAGIDA Hiroshi SARUWATARI Kazuya TAKEDA Fumitada ITAKURA Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/04/01
Vol. E84-A  No. 4  pp. 999-1010
Type of Manuscript:  Special Section PAPER (Special Section on Acoustic Signal Processing)
Category: 
Keyword: 
nonlinear array signal processingmicrophone arrayDOA estimationcomplementary beamforming
 Summary | Full Text:PDF(977.5KB)

An Iterative Inverse Filter Design Method for the Multichannel Sound Field Reproduction System
Yosuke TATEKURA Hiroshi SARUWATARI Kiyohiro SHIKANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/04/01
Vol. E84-A  No. 4  pp. 991-998
Type of Manuscript:  Special Section PAPER (Special Section on Acoustic Signal Processing)
Category: 
Keyword: 
multichannel sound field reproductioninverse filterleast-norm solutioniterative processing
 Summary | Full Text:PDF(295.9KB)

Speech Enhancement Using Nonlinear Microphone Array Based on Noise Adaptive Complementary Beamforming
Hiroshi SARUWATARI Shoji KAJITA Kazuya TAKEDA Fumitada ITAKURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/05/25
Vol. E83-A  No. 5  pp. 866-876
Type of Manuscript:  PAPER
Category: Engineering Acoustics
Keyword: 
speech enhancementmicrophone arraycomplementary beamformingnoise adaptationspectral subtraction
 Summary | Full Text:PDF(1.2MB)

Speech Enhancement Using Nonlinear Microphone Array Based on Complementary Beamforming
Hiroshi SARUWATARI Shoji KAJITA Kazuya TAKEDA Fumitada ITAKURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/08/25
Vol. E82-A  No. 8  pp. 1501-1510
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: 
Keyword: 
speech enhancementmicrophone arraycomplementary beamformingspectral subtractionspeech recognition
 Summary | Full Text:PDF(1MB)