| 2009 | Interspeech | 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 |
| 2008 | ICASSP | A wideband speech and audio coding candidate for ITU-T G.711WBE standardization. | Yusuke Hiwasaki, Takeshi Mori, Shigeaki Sasaki, Hitoshi Ohmuro, Akitoshi Kataoka |
| 2008 | Interspeech | Noise robust speech dereverberation using constrained inverse filter. | Ken'ichi Furuya, Akitoshi Kataoka, Youichi Haneda |
| 2006 | ICASSP | Speech Dereverberation by Combining Mint-Based Blind Deconvolution and Modified Spectral Subtraction. | Ken'ichi Furuya, Sumitaka Sakauchi, Akitoshi Kataoka |
| 2004 | ICASSP | A solution to echo path imbalance problem in stereo echo cancellation. | Satoru Emura, Yoichi Haneda, Akitoshi Kataoka |
| 2004 | Interspeech | Measuring the perceived importance of time- and frequency-divided speech blocks for transmitting over packet networks. | Akitoshi Kataoka, Yusuke Hiwasaki, Toru Morinaga, Jotaro Ikedo |
| 1998 | Interspeech | ITU-t g.729 extension at 6.4 kbps. | Erik Ekudden, Roar Hagen, Bjrn Johansson, Shinji Hayashi, Akitoshi Kataoka, Sachiko Kurihara |
| 1997 | Interspeech | A 16-kbit/s wideband speech codec scalable with g.729. | Akitoshi Kataoka, Sachiko Kurihara, Shigeaki Sasaki, Shinji Hayashi |
| 1996 | ICASSP | 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 |
| 1995 | ICASSP | 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 |
| 1995 | Interspeech | Wideband CELP coder at 16-kbit/s with 10-ms frame. | Shigeaki Sasaki, Akitoshi Kataoka, Takehiro Moriya |
| 1994 | ICASSP | Implementation and performance of an 8-kbit/s conjugate structure CELP speech coder. | Akitoshi Kataoka, Takehiro Moriya, Shinji Hayashi |
| 1993 | ICASSP | An 8-bit/s speech coder based on conjugate structure CELP. | Akitoshi Kataoka, Takehiro Moriya, Shinji Hayashi |