Comparison of objective speech quality measures for voiceband CODECs. - Nobuhiko Kitawaki; Kenzo Itoh; Masaaki Honda; Kazuhiko Kakehi (ICASSP, 1982)

Speech-quality assessment methods for speech-coding systems. - Nobuhiko Kitawaki; Masaaki Honda; Kenzo Itoh (IEEE Commun. Mag., 1984)

Objective quality evaluation for low-bit-rate speech coding systems. - Nobuhiko Kitawaki; Hiromi Nagabuchi; Kenzo Itoh (IEEE J. Sel. Areas Commun., 1988)

Multilingual speech data base for evaluating quality of digitized speech. - Hiroshi Irii; Kenzo Itoh; Nobuhiko Kitawaki (ICSLP, 1990)

Phoneme segment concatenation and excitation control based on spectral distortion criterion for speech synthesis. - Kenzo Itoh; Hideyuki Mizuno; Tetsuya Nomura; Hirokazu Sato (ICSLP, 1990)

Pure Delay Effects on Speech Quality in Telecommunications. - Nobuhiko Kitawaki; Kenzo Itoh (IEEE J. Sel. Areas Commun., 1991)

High quality speech synthesis based on wavelet compilation of phoneme segments. - Tomohisa Hirokawa; Kenzo Itoh; Hirokazu Sato (ICSLP, 1992)

Segmental power control for Japanese speech synthesis. - Kenzo Itoh; Tomohisa Hirokawa; Hirokazu Sato (ICSLP, 1992)

A new waveform speech synthesis approach based on the COC speech spectrum. - Kenzo Itoh; Shin'ya Nakajima; Tomohisa Hirokawa (ICASSP (1), 1994)

Speech editor based on enhanced user-system interaction for high quality text-to-speech synthesis. - Kazuo Hakoda; Tomohisa Hirokawa; Kenzo Itoh (ICSLP, 1994)

Correlation analysis between speech power and pitch frequency for twenty spoken languages. - Kenzo Itoh (ICSLP, 1994)

A new artificial speech signal for objective quality evaluation of speech coding systems. - Kenzo Itoh; Nobuhiko Kitawaki; Hiroshi Irii; Hiromi Nagabuchi (IEEE Trans. Commun., 1994)

Environmental noise reduction based on speech/non-speech identification for hearing aids. - Kenzo Itoh; Masahide Mizushima (ICASSP, 1997)