Akihiro HIRANO


A Distortion-Free Learning Algorithm for Feedforward Multi-Channel Blind Source Separation
Akihide HORITA Kenji NAKAYAMA Akihiro HIRANO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/12/01
Vol. E90-A  No. 12  pp. 2835-2845
Type of Manuscript:  PAPER
Category: Digital Signal Processing
Keyword: 
blind source separationsignal distortionconvergencelearning algorithmconvolutive mixture
 Summary | Full Text:PDF(346KB)

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
 Summary | Full Text:PDF(804.7KB)

Alternative Learning Algorithm for Stereophonic Acoustic Echo Canceller without Pre-Processing
Akihiro HIRANO Kenji NAKAYAMA Daisuke SOMEDA Masahiko TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2004/08/01
Vol. E87-A  No. 8  pp. 1958-1964
Type of Manuscript:  Special Section PAPER (Special Section on Digital Signal Processing)
Category: Speech/Acoustic Signal Processing
Keyword: 
stereophonic acoustic echo cancellerpre-processing
 Summary | Full Text:PDF(618.2KB)

A Low-Distortion Noise Canceller and Its Learning Algorithm in Presence of Crosstalk
Akihiro HIRANO Kenji NAKAYAMA Shinya ARAI Masaki DEGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/02/01
Vol. E84-A  No. 2  pp. 414-421
Type of Manuscript:  Special Section PAPER (Special Section on Noise Cancellation and Reduction Techniques)
Category: Adaptive Noise Cancellation
Keyword: 
adaptive noise cancellercrosstalklow distortion
 Summary | Full Text:PDF(1.3MB)

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
 Summary | Full Text:PDF(587.1KB)

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
 Summary | Full Text:PDF(852KB)

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
 Summary | Full Text:PDF(481.5KB)

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
 Summary | Full Text:PDF(539.7KB)