Adaptive bit allocation scheme in predictive coding of speech. - Masaaki Honda; Nobuhiko Kitawaki; Fumitada Itakura (ICASSP, 1982)

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)

Quality assessment of speech coding and speech synthesis systems. - Nobuhiko Kitawaki; Hiromi Nagabuchi (IEEE Commun. Mag., 1988)

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)

Speech coding technology for ATM networks. - Nobuhiko Kitawaki; Hiromi Nagabuchi; Masahiro Taka; Kenzo Takahashi (IEEE Commun. Mag., 1990)

Evaluation and improvement of coded speech quality degraded by cell loss in ATM networks. - Hiromi Nagabuchi; Nobuhiko Kitawaki (EUROSPEECH, 1991)

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

Proposal of selection method test pictures in HDTV subjective quality assessments. - Takeshi Tachi; Satoru Iai; Nobuhiko Kitawaki (Comput. Commun. Rev., 1992)

A model for evaluating talker echo and sidetone in a telephone transmission network. - Naotoshi Osaka; Kazuhiko Kakehi; Satori Iai; Nobuhiko Kitawaki (IEEE Trans. Commun., 1992)

Subjective performance assessment of CCITT's 16 kbit/s speech coding algorithm. - C. R. South; J. Rugelbak; Paolino Usai; Nobuhiko Kitawaki; Hiroshi Irii; John R. Rosenberger; J. R. Cavanaugh; C. A. Adesanya; D. Pascal; Norman Gleiss; G. J. Barnes (Speech Commun., 1993)

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)

Performance evaluation of objective quality measures for coded speech. - Akira Takahashi 001; Nobuhiko Kitawaki; Paolino Usai; David Atkinson (EUROSPEECH, 1997)

Common-acoustical-pole and residue model and its application to spatial interpolation and extrapolation of a room transfer function. - Yoichi Haneda; Yutaka Kaneda; Nobuhiko Kitawaki (IEEE Trans. Speech Audio Process., 1999)

Common-acoustical-pole and zero modeling of head-related transfer functions. - Yoichi Haneda; Shoji Makino; Yutaka Kaneda; Nobuhiko Kitawaki (IEEE Trans. Speech Audio Process., 1999)

Characteristics of spoken language required for objective quality evaluation of echo cancellers. - Nobuhiko Kitawaki; Futoshi Asano; Takeshi Yamada (INTERSPEECH, 2000)

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 (ICASSP (5), 2003)

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 001 (INTERSPEECH, 2003)

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 (IEEE Trans. Speech Audio Process., 2003)

Integration of n-best recognition results obtained by multiple noise reduction algorithms. - Takeshi Yamada; Jiro Okada; Nobuhiko Kitawaki (INTERSPEECH, 2004)

Perceptual QoS assessment technologies for VoIP. - Akira Takahashi 001; Hideaki Yoshino; Nobuhiko Kitawaki (IEEE Commun. Mag., 2004)

State estimation of meetings by information fusion using Bayesian network. - Michiaki Katoh; Kiyoshi Yamamoto; Jun Ogata; Takashi Yoshimura; Futoshi Asano; Hideki Asoh; Nobuhiko Kitawaki (INTERSPEECH, 2005)

Objective Quality Assessment of Wideband Speech Coding. - Nobuhiko Kitawaki; Kou Nagai; Takeshi Yamada (IEICE Trans. Commun., 2005)

Word intelligibility estimation of noise-reduced speech. - Takeshi Yamada; Masakazu Kumakura; Nobuhiko Kitawaki (INTERSPEECH, 2006)

Multimedia Quality Prediction Methodologies for Advanced Mobile and IP-Based Telephony. - Nobuhiko Kitawaki (IEICE Trans. Commun., 2006)

Detection of Overlapping Speech in Meetings Using Support Vector Machines and Support Vector Regression. - Kiyoshi Yamamoto; Futoshi Asano; Takeshi Yamada; Nobuhiko Kitawaki (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2006)

Impairment Factor Framework for Wide-Band Speech Codecs. - Sebastian Möller 001; Alexander Raake; Nobuhiko Kitawaki; Akira Takahashi 001; Marcel Wältermann (IEEE Trans. Speech Audio Process., 2006)

Performance Estimation of Speech Recognition System Under Noise Conditions Using Objective Quality Measures and Artificial Voice. - Takeshi Yamada; Masakazu Kumakura; Nobuhiko Kitawaki (IEEE Trans. Speech Audio Process., 2006)

Objective Estimation of Word Intelligibility for Noise-Reduced Speech. - Takeshi Yamada; Masakazu Kumakura; Nobuhiko Kitawaki (IEICE Trans. Commun., 2008)

MPEG-2/H.264 Transcoding with Vector Conversion Reducing Re-Quantization Noise. - Takeshi Yoshitome; Kazuto Kamikura; Shoji Makino; Nobuhiko Kitawaki (ICCCN, 2010)

Performance estimation of noisy speech recognition considering recognition task complexity. - Takeshi Yamada; Tomohiro Nakajima; Nobuhiko Kitawaki; Shoji Makino (INTERSPEECH, 2010)

Cepstral smoothing of separated signals for underdetermined speech separation. - Yumi Ansa; Shoko Araki; Shoji Makino; Tomohiro Nakatani; Takeshi Yamada; Atsushi Nakamura; Nobuhiko Kitawaki (ISCAS, 2010)

Comparison of MOS evaluation characteristics for Chinese, Japanese, and English in IP telephony. - Zhenyu Cai; Nobuhiko Kitawaki; Takeshi Yamada; Shoji Makino (IUCS, 2010)

Instrumental Estimation of E-Model Parameters for Wideband Speech Codecs. - Sebastian Möller 001; Nicolas Côté; Valérie Gautier-Turbin; Nobuhiko Kitawaki; Akira Takahashi 001 (EURASIP J. Audio Speech Music. Process., 2010)

Non-reference Objective Quality Evaluation for Noise-Reduced Speech Using Overall Quality Estimation Model. - Takeshi Yamada; Yuki Kasuya; Yuki Shinohara; Nobuhiko Kitawaki (IEICE Trans. Commun., 2010)

Automatic scoring method for open answer task in the SJ-CAT speaking test considering utterance difficulty level. - Hao Lu; Takeshi Yamada; Shingo Imai; Takahiro Shinozaki; Ryuichi Nisimura; Kenkichi Ishizuka; Shoji Makino; Nobuhiko Kitawaki (APSIPA, 2014)