An 8-bit/s speech coder based on conjugate structure CELP. - Akitoshi Kataoka; Takehiro Moriya; Shinji Hayashi (ICASSP (2), 1993)

Implementation and performance of an 8-kbit/s conjugate structure CELP speech coder. - Akitoshi Kataoka; Takehiro Moriya; Shinji Hayashi (ICASSP (2), 1994)

8 kbit/s short and medium delay speech codecs based on CELP coding. - Shinji Hayashi; Akitoshi Kataoka; Takehiro Moriya (Eur. Trans. Telecommun., 1994)

Improved CS-CELP speech coding in a noisy environment using a trained sparse conjugate codebook. - Akitoshi Kataoka; Sachiko Hosaka; Jotaro Ikedo; Takehiro Moriya; Shinji Hayashi (ICASSP, 1995)

Wideband CELP coder at 16-kbit/s with 10-ms frame. - Shigeaki Sasaki; Akitoshi Kataoka; Takehiro Moriya (EUROSPEECH, 1995)

Dual-Pulse CS-CELP: a toll-quality low-complexity speech coder at 7.8 kbit/s. - Hitoshi Ohmuro; Jotaro Ikedo; Takehiro Moriya; Akitoshi Kataoka; Shinji Hayashi; Kazunori Mano (ICASSP, 1996)

An 8-kb/s conjugate structure CELP (CS-CELP) speech coder. - Akitoshi Kataoka; Takehiro Moriya; Shinji Hayashi (IEEE Trans. Speech Audio Process., 1996)

A 16-kbit/s wideband speech codec scalable with g.729. - Akitoshi Kataoka; Sachiko Kurihara; Shigeaki Sasaki; Shinji Hayashi (EUROSPEECH, 1997)

ITU-t g.729 extension at 6.4 kbps. - Erik Ekudden; Roar Hagen; Björn Johansson; Shinji Hayashi; Akitoshi Kataoka; Sachiko Kurihara (ICSLP, 1998)

Design and description of CS-ACELP: a toll quality 8 kb/s speech coder. - Redwan Salami; Claude Laflamme; Jean-Pierre Adoul; Akitoshi Kataoka; Shinji Hayashi; Takehiro Moriya; Claude Lamblin; Dominique Massaloux; Stéphane Proust; Peter Kroon; Yair Shoham (IEEE Trans. Speech Audio Process., 1998)

A solution to echo path imbalance problem in stereo echo cancellation. - Satoru Emura; Yoichi Haneda; Akitoshi Kataoka (ICASSP (4), 2004)

Measuring the perceived importance of time- and frequency-divided speech blocks for transmitting over packet networks. - Akitoshi Kataoka; Yusuke Hiwasaki; Toru Morinaga; Jotaro Ikedo (INTERSPEECH, 2004)

Scalable wideband speech coding using G.729 as a component. - Akitoshi Kataoka; Shinji Hayashi (Syst. Comput. Jpn., 2005)

Quality assessment for extending ITU-T G.729 Annexes. - Sachiko Kurihara; Akitoshi Kataoka; Shinji Hayashi; Takao Kaneko (Syst. Comput. Jpn., 2005)

Speech Dereverberation by Combining Mint-Based Blind Deconvolution and Modified Spectral Subtraction. - Ken'ichi Furuya; Sumitaka Sakauchi; Akitoshi Kataoka (ICASSP (1), 2006)

Measuring the Perceived Importance of Speech Segments for Transmission over IP Networks. - Yusuke Hiwasaki; Toru Morinaga; Jotaro Ikedo; Akitoshi Kataoka (IEICE Trans. Commun., 2006)

A G.711 Embedded Wideband Speech Coding for VoIP Conferences. - Yusuke Hiwasaki; Hitoshi Ohmuro; Takeshi Mori; Sachiko Kurihara; Akitoshi Kataoka (IEICE Trans. Inf. Syst., 2006)

Stereo echo cancellation algorithm using adaptive update on the basis of enhanced input-signal vector. - Satoru Emura; Youichi Haneda; Akitoshi Kataoka; Shoji Makino (Signal Process., 2006)

An Approach to Solve Local Minimum Problem in Sound Source and Microphone Localization. - Kazunori Kobayashi; Ken'ichi Furuya; Youichi Haneda; Akitoshi Kataoka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

Gradient-Limited Affine Projection Algorithm for Double-Talk-Robust and Fast-Converging Acoustic Echo Cancellation. - Suehiro Shimauchi; Youichi Haneda; Akitoshi Kataoka; Akinori Nishihara (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

Robust Speech Dereverberation Using Multichannel Blind Deconvolution With Spectral Subtraction. - Ken'ichi Furuya; Akitoshi Kataoka (IEEE Trans. Speech Audio Process., 2007)

A wideband speech and audio coding candidate for ITU-T G.711WBE standardization. - Yusuke Hiwasaki; Takeshi Mori; Shigeaki Sasaki; Hitoshi Ohmuro; Akitoshi Kataoka (ICASSP, 2008)

Noise robust speech dereverberation using constrained inverse filter. - Ken'ichi Furuya; Akitoshi Kataoka; Youichi Haneda (INTERSPEECH, 2008)

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 (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2008)

Robust Frequency Domain Acoustic Echo Cancellation Filter Employing Normalized Residual Echo Enhancement. - Suehiro Shimauchi; Youichi Haneda; Akitoshi Kataoka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2008)

A display-mounted high-quality stereo microphone array for high-definition videophone system. - Yusuke Hioka; Manabu Okamoto; Kazunori Kobayashi; Yoichi Haneda; Akitoshi Kataoka (IEEE Trans. Consumer Electron., 2008)

A Hands-Free Unit with Noise Reduction by Using Adaptive Beamformer. - Kazunori Kobayashi; Yoichi Haneda; Ken'ichi Furuya; Akitoshi Kataoka (IEEE Trans. Consumer Electron., 2008)

Speech enhancement in a 2-dimensional area based on power spectrum estimation of multiple areas with investigation of existence of active sources. - Yusuke Hioka; Ken'ichi Furuya; Youichi Haneda; Akitoshi Kataoka (INTERSPEECH, 2009)

Improving Power Spectra Estimation in 2-Dimensional Areas Using Number of Active Sound Sources. - Yusuke Hioka; Ken'ichi Furuya; Youichi Haneda; Akitoshi Kataoka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011)

Echo Reduction Using Wiener Gains Considering Short-Time Correlation Between Echo and Near-End Speech. - Masahiro Fukui; Akira Nakagawa; Suehiro Shimauchi; Yoichi Haneda; Akitoshi Kataoka (IWAENC, 2012)

Adaptive Frequency-dependent Regularization for Multi-zone Sound Field Reproduction. - Tong Zhou; Kazuya Yasueda; Akitoshi Kataoka (GCCE, 2024)