Computer-assisted English vowel learning system for Japanese speakers using cross language formant structures. - Yasushi Tsubota; Masatake Dantsuji; Tatsuya Kawahara (INTERSPEECH, 2000)

Modeling and automatic detection of English sentence stress for computer-assisted English prosody learning system. - Kazunori Imoto; Yasushi Tsubota; Antoine Raux; Tatsuya Kawahara; Masatake Dantsuji (INTERSPEECH, 2002)

Recognition and verification of English by Japanese students for computer-assisted language learning system. - Yasushi Tsubota; Tatsuya Kawahara; Masatake Dantsuji (INTERSPEECH, 2002)

Automatic transformation of environmental sounds into sound-imitation words based on Japanese syllable structure. - Kazushi Ishihara; Yasushi Tsubota; Hiroshi G. Okuno (INTERSPEECH, 2003)

Practical use of English pronunciation system for Japanese students in the CALL classroom. - Tatsuya Kawahara; Masatake Dantsuji; Yasushi Tsubota (INTERSPEECH, 2004)

Prototyping a call system for students of Japanese using dynamic diagram generation and interactive hints. - Christopher J. Waple; Yasushi Tsubota; Masatake Dantsuji; Tatsuya Kawahara (INTERSPEECH, 2006)

Evaluating and optimizing Japanese tutor system featuring dynamic question generation and interactive guidance. - Christopher J. Waple; Hongcui Wang; Tatsuya Kawahara; Yasushi Tsubota; Masatake Dantsuji (INTERSPEECH, 2007)

Japanese CALL system based on dynamic question generation and error prediction for ASR. - Tatsuya Kawahara; Hongcui Wang; Yasushi Tsubota; Masatake Dantsuji (SLaTE, 2009)

Difficulties in Perception and Pronunciation of Mandarin Chinese Disyllabic Word Tone Acquisition: A Study of Some Japanese University Students. - Yuting Dong; Yasushi Tsubota; Masatake Dantsuji (PACLIC, 2013)

Sustaining Outside-of-Class CALL Activities by Means of a Student Self-Evaluation System in a University Blended Learning EFL Course. - Yasushige Ishikawa; Reiko Akahane-Yamada; Misato Kitamura; Craig Smith; Yasushi Tsubota; Masatake Dantsuji (HCI (15), 2014)

Secure Data Management in an English Speaking Test Implemented in General-Purpose PC Classrooms. - Hideo Masuda; Masayuki Mori; Katsunori Kanzawa; Yasushi Tsubota; Yumi Hato; Yasuaki Kuroe (SIGUCCS, 2016)

Building Student Interactions Outside the Classroom: Utilizing a Web-Based Application in a University Flipped Learning Course for EFL Learners. - Yasushige Ishikawa; Yasushi Tsubota; Takatoyo Umemoto; Masayuki Murakami; Mutsumi Kondo; Ayako Suto; Koichi Nishiyama (HCI (25), 2020)

Achieving Student Engagement in Learning: Utilizing a Rubric-Based Assessment System for Visualizing Learners' Self-, Peer, and Teacher Assessments. - Yasushige Ishikawa; Takatoyo Umemoto; Yasushi Tsubota; Shigeo Fujiwara; Ayako Suto; Koichi Nishiyama (HCI (23), 2021)