A high-gain DSI-ADPCM system. - Yohtaro Yatsuzuka (ICASSP, 1979)

An 32-kbps ADPCM encoding with a variable initially large leakage and adaptive dual loop predictors. - Yohtaro Yatsuzuka; Henri G. Suyderhoud (ICASSP, 1982)

Highly Sensitive Speech Detector and High-Speed Voiceband Data Discriminator in DSI-ADPCM Systems. - Yohtaro Yatsuzuka (IEEE Trans. Commun., 1982)

High-Gain Digital Speech Interpolation with Adaptive Differential PCM Encoding. - Yohtaro Yatsuzuka (IEEE Trans. Commun., 1982)

An advanced 32 kbit/s ADPCM coding to transmit speech and high-speed voiceband data. - Atsushi Fukasawa; Kenichiro Hosoda; Takashi Kanda; Yohtaro Yatsuzuka; Makoto Takahashi (ICASSP, 1986)

Performance of 16 kbit/s APC codec with maximum likelihood quantization for low-speed voiceband data. - Shigeru Iizuka; Yohtaro Yatsuzuka; Tomohiro Yamazaki (ICASSP, 1986)

A variable rate coding by APC with maximum likelihood quantization from 4.8 kbits/s to 16 kbits/s. - Yohtaro Yatsuzuka; Shigeru Iizuka; Tomohiro Yamazaki (ICASSP, 1986)

A 32 kbit/s ADPCM algorithm having high performance for both voice and 9.6 kbit/s modem signals. - Kenichiro Hosoda; Osamu Noguchi; Yohtaro Yatsuzuka (IEEE J. Sel. Areas Commun., 1988)

An error perturbation for learning and detection of local minima in binary 3-layered neural networks. - Yohtaro Yatsuzuka (ICNN, 1995)