Masafumi NISHIMURA


Local Peak Enhancement for In-Car Speech Recognition in Noisy Environment
Osamu ICHIKAWA Takashi FUKUDA Masafumi NISHIMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2008/03/01
Vol. E91-D  No. 3  pp. 635-639
Type of Manuscript:  Special Section LETTER (Special Section on Robust Speech Processing in Realistic Environments)
Category: 
Keyword: 
harmonicsformantspeech enhancementnoise reductionspeech recognition
 Summary | Full Text:PDF(1MB)

Automatic Prosody Labeling Using Multiple Models for Japanese
Ryuki TACHIBANA Tohru NAGANO Gakuto KURATA Masafumi NISHIMURA Noboru BABAGUCHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2007/11/01
Vol. E90-D  No. 11  pp. 1805-1812
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
prosody recognitionmora accentprosodic phrase boundarytext-to-speech synthesis
 Summary | Full Text:PDF(346.2KB)

Acoustic Model Adaptation Using First-Order Linear Prediction for Reverberant Speech
Tetsuya TAKIGUCHI Masafumi NISHIMURA Yasuo ARIKI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/03/01
Vol. E89-D  No. 3  pp. 908-914
Type of Manuscript:  Special Section PAPER (Special Section on Statistical Modeling for Speech Processing)
Category: Speech Recognition
Keyword: 
acoustic modelreverberant speechadaptationhands-free speech recognition
 Summary | Full Text:PDF(551.8KB)

Simultaneous Adaptation of Echo Cancellation and Spectral Subtraction for In-Car Speech Recognition
Osamu ICHIKAWA Masafumi NISHIMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/07/01
Vol. E88-A  No. 7  pp. 1732-1738
Type of Manuscript:  Special Section PAPER (Special Section on Multi-channel Acoustic Signal Processing)
Category: Speech Enhancement
Keyword: 
speech enhancementecho cancellernoise reductionspectral subtractionspeech recognition
 Summary | Full Text:PDF(775.1KB)

Improved HMM Separation for Distant-Talking Speech Recognition
Tetsuya TAKIGUCHI Masafumi NISHIMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2004/05/01
Vol. E87-D  No. 5  pp. 1127-1137
Type of Manuscript:  Special Section PAPER (Special Section on Speech Dynamics by Ear, Eye, Mouth and Machine)
Category: 
Keyword: 
distant-talking speech recognitionHMM separationreverberationnoise
 Summary | Full Text:PDF(1017.7KB)

Sound Source Localization Using a Profile Fitting Method with Sound Reflectors
Osamu ICHIKAWA Tetsuya TAKIGUCHI Masafumi NISHIMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2004/05/01
Vol. E87-D  No. 5  pp. 1138-1145
Type of Manuscript:  Special Section PAPER (Special Section on Speech Dynamics by Ear, Eye, Mouth and Machine)
Category: 
Keyword: 
sound source localizationmicrophone arraysound reflectorICTDICLD
 Summary | Full Text:PDF(1.2MB)

Speech Enhancement by Profile Fitting Method
Osamu ICHIKAWA Tetsuya TAKIGUCHI Masafumi NISHIMURA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2003/03/01
Vol. E86-D  No. 3  pp. 514-521
Type of Manuscript:  Special Section PAPER (Special Issue on Speech Information Processing)
Category: Robust Speech Recognition and Enhancement
Keyword: 
speech enhancementmicrophone arraybeamformernoise reductionspectral subtractionspeech recognition
 Summary | Full Text:PDF(840.5KB)