New concept of digital multi-frequency receiver. - Akira Ichikawa; Kazuo Nakata (ICASSP, 1979)

Conceptual system design for continuous speech recognition LSI. - Akira Ichikawa; Kazuo Nakata; Akio Komatsu; Yoshiaki Kitazume (ICASSP, 1981)

Phoneme recognition in continuous speech. - Akio Komatsu; Akira Ichikawa; Kazuo Nakata; Yoshiaki Asakawa; Hiroko Matsuzaka (ICASSP, 1982)

Dual adaptive delta modulation for mobile voice channel and its DSP implementation. - Mamoru Nakatsui; Kazuo Nakata (ICASSP, 1985)

An improved CELP by the separate coding of pulsive and random residuals. - Kazuo Nakata; Satoshi Komine (ICASSP, 1986)

An LPC vocoder of CADM of residual random components. - Kazuo Nakata (ECST, 1987)

Noise reduction of speech by neural networks and vector quantization. - Kazuo Nakata; Akihiko Sugiura (EUROSPEECH, 1989)

Recursive and adaptive predictive coding of speech. - Kazuo Nakata; Kin-ichi Higure (ICASSP, 1997)