| 2010 | ICCCN | MPEG-2/H.264 Transcoding with Vector Conversion Reducing Re-Quantization Noise. | Takeshi Yoshitome, Kazuto Kamikura, Shoji Makino, Nobuhiko Kitawaki |
| 2010 | Interspeech | Performance estimation of noisy speech recognition considering recognition task complexity. | Takeshi Yamada, Tomohiro Nakajima, Nobuhiko Kitawaki, Shoji Makino |
| 2010 | ISCAS | Cepstral smoothing of separated signals for underdetermined speech separation. | Yumi Ansa, Shoko Araki, Shoji Makino, Tomohiro Nakatani, Takeshi Yamada, Atsushi Nakamura, Nobuhiko Kitawaki |
| 2006 | Interspeech | Word intelligibility estimation of noise-reduced speech. | Takeshi Yamada, Masakazu Kumakura, Nobuhiko Kitawaki |
| 2005 | Interspeech | State estimation of meetings by information fusion using Bayesian network. | Michiaki Katoh, Kiyoshi Yamamoto, Jun Ogata, Takashi Yoshimura, Futoshi Asano, Hideki Asoh, Nobuhiko Kitawaki |
| 2004 | Interspeech | Integration of n-best recognition results obtained by multiple noise reduction algorithms. | Takeshi Yamada, Jiro Okada, Nobuhiko Kitawaki |
| 2003 | ICASSP | Estimation of the number of sound sources using support vector machines and its application to sound source separation. | Kiyoshi Yamamoto, Futoshi Asano, Willem F. G. van Rooijen, Eric Y. L. Ling, Takeshi Yamada, Nobuhiko Kitawaki |
| 2003 | Interspeech | Detection and separation of speech segment using audio and video information fusion. | Futoshi Asano, Yoichi Motomura, Hideki Asoh, Takashi Yoshimura, Naoyuki Ichimura, Kiyoshi Yamamoto, Nobuhiko Kitawaki, Satoshi Nakamura |
| 2001 | ICASSP | A combined approach of array processing and independent component analysis for blind separation of acoustic signals. | Futoshi Asano, Shiro Ikeda, Michiaki Ogawa, Hideki Asoh, Nobuhiko Kitawaki |
| 2000 | Interspeech | Characteristics of spoken language required for objective quality evaluation of echo cancellers. | Nobuhiko Kitawaki, Futoshi Asano, Takeshi Yamada |
| 1997 | Interspeech | Performance evaluation of objective quality measures for coded speech. | Akira Takahashi, Nobuhiko Kitawaki, Paolino Usai, David Atkinson |
| 1991 | Interspeech | Evaluation and improvement of coded speech quality degraded by cell loss in ATM networks. | Hiromi Nagabuchi, Nobuhiko Kitawaki |
| 1990 | Interspeech | Multilingual speech data base for evaluating quality of digitized speech. | Hiroshi Irii, Kenzo Itoh, Nobuhiko Kitawaki |
| 1982 | ICASSP | Adaptive bit allocation scheme in predictive coding of speech. | Masaaki Honda, Nobuhiko Kitawaki, Fumitada Itakura |
| 1982 | ICASSP | Comparison of objective speech quality measures for voiceband CODECs. | Nobuhiko Kitawaki, Kenzo Itoh, Masaaki Honda, Kazuhiko Kakehi |