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IEICE Trans

Akitoshi KATAOKA

Improving Power Spectra Estimation in 2-Dimensional Areas Using Number of Active Sound Sources
Yusuke HIOKA Ken'ichi FURUYA Yoichi HANEDA Akitoshi KATAOKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/01/01
Vol. E94-A  No. 1  pp. 273-281
Type of Manuscript:  PAPER
Category: Engineering Acoustics
Keyword: 
microphone array, power spectrum estimation, speech enhancement, 2-dimensional area, estimating source position, 
 Summary | Full Text:PDF
Robust Frequency Domain Acoustic Echo Cancellation Filter Employing Normalized Residual Echo Enhancement
Suehiro SHIMAUCHI Yoichi HANEDA Akitoshi KATAOKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/06/01
Vol. E91-A  No. 6  pp. 1347-1356
Type of Manuscript:  Special Section PAPER (Special Section on Acoustic Scene Analysis and Reproduction)
Category: 
Keyword: 
adaptive filter, acoustic echo canceller, robust control, 
 Summary | Full Text:PDF
Enhancement of Sound Sources Located within a Particular Area Using a Pair of Small Microphone Arrays
Yusuke HIOKA Kazunori KOBAYASHI Ken'ichi FURUYA Akitoshi KATAOKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/02/01
Vol. E91-A  No. 2  pp. 561-574
Type of Manuscript:  PAPER
Category: Engineering Acoustics
Keyword: 
microphone array, noise suppression, spectrum emphasis, power spectrum estimation, non-negative least squares method, 
 Summary | Full Text:PDF
An Approach to Solve Local Minimum Problem in Sound Source and Microphone Localization
Kazunori KOBAYASHI Ken'ichi FURUYA Yoichi HANEDA Akitoshi KATAOKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/12/01
Vol. E90-A  No. 12  pp. 2826-2834
Type of Manuscript:  PAPER
Category: Engineering Acoustics
Keyword: 
microphone array, localization, local minimum, teleconference, 
 Summary | Full Text:PDF
Gradient-Limited Affine Projection Algorithm for Double-Talk-Robust and Fast-Converging Acoustic Echo Cancellation
Suehiro SHIMAUCHI Yoichi HANEDA Akitoshi KATAOKA Akinori NISHIHARA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/03/01
Vol. E90-A  No. 3  pp. 633-641
Type of Manuscript:  PAPER
Category: Engineering Acoustics
Keyword: 
affine projection algorithm, acoustic echo canceller, double-talk, robust control, 
 Summary | Full Text:PDF
A G.711 Embedded Wideband Speech Coding for VoIP Conferences
Yusuke HIWASAKI Hitoshi OHMURO Takeshi MORI Sachiko KURIHARA Akitoshi KATAOKA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2006/09/01
Vol. E89-D  No. 9  pp. 2542-2552
Type of Manuscript:  PAPER
Category: Speech and Hearing
Keyword: 
wideband speech, VoIP, G.711, scalable coding, MCU, partial mixing, transcoding, 
 Summary | Full Text:PDF
Measuring the Perceived Importance of Speech Segments for Transmission over IP Networks
Yusuke HIWASAKI Toru MORINAGA Jotaro IKEDO Akitoshi KATAOKA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/02/01
Vol. E89-B  No. 2  pp. 326-333
Type of Manuscript:  Special Section PAPER (Special Section on Multimedia QoS Evaluation and Management Technologies)
Category: 
Keyword: 
scalable speech coding, multiple description coding, packet networks, VAD, QoS, VoIP, estimated MOS, linear regression model, 
 Summary | Full Text:PDF
A 6.4-kbit/s Variable-Bit-Rate Extension to the G.729 (CS-ACELP) Speech Coder
Akitoshi KATAOKA Sachiko KURIHARA Shinji HAYASHI 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1997/12/25
Vol. E80-D  No. 12  pp. 1183-1189
Type of Manuscript:  PAPER
Category: Speech Processing and Acoustics
Keyword: 
CELP coding, G.729, CS-ACELP, variable bit-rate, DSVD, 
 Summary | Full Text:PDF
A Low Complexity Speech Codec and Its Error Protection
Jotaro IKEDO Akitoshi KATAOKA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1997/11/25
Vol. E80-B  No. 11  pp. 1688-1695
Type of Manuscript:  PAPER
Category: Source Encoding
Keyword: 
speech codec, low complexity, error protection, personal handy phone system, 
 Summary | Full Text:PDF
Improved CELP-Based Coding in a Noisy Environment Using a Trained Sparse Conjugate Codebook
Akitoshi KATAOKA Sachiko KURIHARA Shinji HAYASHI Takehiro MORIYA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 1996/02/25
Vol. E79-D  No. 2  pp. 123-129
Type of Manuscript:  PAPER
Category: Speech Processing and Acoustics
Keyword: 
CELP coding, conjugae fixed codebook, trained sparse codebook, speech quality in a noisy environment, 
 Summary | Full Text:PDF