Curriculum Vitaes
Profile Information
- Affiliation
- Professor, Faculty of Science and Technology, Department of Information and Communication Sciences, Sophia University
- Degree
- 工学士(上智大学)工学修士(上智大学)博士（工学）(上智大学)
- Contact information
- arai
sophia.ac.jp - Researcher number
- 80266072
- J-GLOBAL ID
- 200901064275514612
- researchmap Member ID
- 1000260131
Research and professional experience:
2008-present Professor at the Department of Information and Communication Sciences,
Sophia University
2006-2008 Professor at the Department of Electrical
and Electronics Engineering, Sophia University
2003-2004 Visiting Scientist at the Research Lab. of Electronics,
Massachusetts Institute of Technology (Cambridge, MA, USA)
2000-2006 Associate Professor at the Department of Electrical
and Electronics Engineering, Sophia University
1998-2000 Assistant Professor at the Department of Electrical
and Electronics Engineering, Sophia University
1997-1998 Research Fellow at the International Computer Science Institute
/ University of California at Berkeley
(Berkeley, California, USA)
1995-1996 Visiting Scientist at the Department of Electrical Engineering,
Oregon Graduate Institute of Science and Technology
(Portland, Oregon, USA)
1994-1995 Research Associate at the Department of Electrical and
Electronics Engineering, Sophia University
working with Professor Yoshida
1992-1993 Visiting Scientist at the Department of Computer Science
and Engineering, Oregon Graduate Institute of Science and Technology
(Portland, Oregon, USA)
Short-term Visiting Scientist:
2000, August / 2001, August / 2002, August
Massachusetts Institute of Technology (Cambridge, Massachusetts, USA)
2001, March
Max Planck Institute for Psycholinguistics (Nijmegen, the Netherlands)
The series of events involved in speech communication is called “Speech Chain,” and it is a basic concept in the speech and hearing sciences. We focus on research related to speech communication. The fields of this research are wide-ranging, and our interests include the following interdisciplinary areas:
- education in acoustics (e.g., physical models of human vocal tract),
- acoustic phonetics,
- speech and hearing sciences,
- speech production,
- speech analysis and speech synthesis,
- speech signal processing (e.g., speech enhancement),
- speech / language recognition and spoken language processing,
- speech perception and psychoacoustics,
- acoustics for speech disorders,
- speech processing for hearing impaired,
- speaker characteristics in speech, and
- real-time signal processing using DSP processors.
(Subject of research)
General Acoustics and Education in Acoustics (including vocal-tract models)
Acoustic Phonetics, Applied Linguistics
Speech Science (including speech production), Hearing Science (including speech perception), Cognitive Science
Speech Intelligibility, Speech Processing, Speech Emhancement
Assistive Technology related to Acoustics, Speech and Acoustics for Everybody
Speech Processing, Applications related to Acoustics
Speaker Characteristics of Speech
(Proposed theme of joint or funded research)
acoustic signal processing
speech signal processing
auditory signal processing
Research Interests
26Research Areas
9Research History
2-
Jan, 1997 - Mar, 1998
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Jun, 1995 - Dec, 1996
Awards
21-
Jun, 2025
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Mar, 2025
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Mar, 2025
Papers
612-
Interspeech Lisboa 2005 : 9th European Conference on Speech Communication and Technology, September 4-8, 2005., 2769-2772, Sep, 2005
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Interspeech Lisboa 2005 : 9th European Conference on Speech Communication and Technology, September 4-8, 2005., 2025-2028, Sep, 2005
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Interspeech Lisboa 2005 : 9th European Conference on Speech Communication and Technology, September 4-8, 2005., 1741-1744, Sep, 2005
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Interspeech Lisboa 2005 : 9th European Conference on Speech Communication and Technology, September 4-8, 2005., 1033-1036, Sep, 2005
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The journal of Acoustical Society of Japan., 61(9) 524-531, Sep, 2005
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2005(1) 321-322, Mar, 2005
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2005(1) 273-274, Mar, 2005
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Acoustical Science and Technology, 26(2) 212-214, Mar, 2005
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The utterances of the cleft palate children: The comparison between before and after palatal surgeryIEICE technical report. Speech, 104(696) 41-46, Feb, 2005
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IEICE technical report. Speech, 104(696) 25-30, Feb, 2005
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IEICE technical report. Speech, 104(696) 1-6, Feb, 2005
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IEICE technical report. Speech, 104(695) 7-12, Feb, 2005
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SPEECH COMMUNICATION, 45(2) 101-113, Feb, 2005
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Sophia linguistica : working papers in linguistics, 53 49-76, 2005Background : Persistent developmental articulation disorder and language learning impairment are suspected to concur due to a speech processing deficit. The change in children's perceptual strategies is proposed as an indicator of development of speech processing ability (Nittrouer & Miller, 1997b). To diagnose a speech processing deficit and intervene in it early, we examined perceptual weight in an attempt to identify a marker for the development of speech processing ability. Methods : Forty-two native Japanese adults without speech disorder and 2 native Japanese children with persistent developmental articulation disorder and language learning impairment participated the study. They identified tokens from a /∫/-/s/ continuum followed by vocalic portions with formant transitions changing continuously from ones appropriate for /∫/ to those for /s/. Findings : Most adults weighted to the spectrum of the fricative noise more than to formant transition in the same manner as the adults in Nittrouer and Miller. However, as compared with most adults, a small number of adults and the 2 children judged based more on the formant transitions than on the spectrum of the fricative noise like 3- to 4-year-old typically developing children in Nittrouer and Miller. Interpretation : The perceptual weight assigned by adults suggested that they did not perceive uniformly. The perceptual weight assigned by the 2 children indicated that their speech perception ability might develop differently from that of typically developing children because of speech processing deficits.
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Proc. Spring Meet. Acoust. Soc. Jpn., 1(1) 537-538, 2005
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Proc. Spring Meet. Acoust. Soc. Jpn., 1 321-322, 2005
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Proc. Spring Meet. Acoust. Soc. Jpn., 1 319-220, 2005
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Proc. Spring Meet. Acoust. Soc. Jpn., 1 277-278, 2005
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Proc. Spring Meet. Acoust. Soc. Jpn., 1(1) 273-274, 2005
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Proc. of ISCA Workshop on Plasticity in Speech Perception, 158-158, 2005
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Acoustical Science and Technology, 26(5) 459-461, 2005
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The Japanese journal of communication disorders, 21(3) 165-171, Dec, 2004
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Journal of Signal Processing, 8(6) 461-472, Nov, 2004
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Proc. of the Interspeech, Oct, 2004
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Proc. of the 14th International Conference on Biomagnetism (BIOMAG2004), Aug, 2004
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Proc. of From Sound to Sense, 115-120, Jun, 2004
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IEICE Trans. on Fundamentals, 87(5) 1059-1070, May, 2004Classical models of speech recognition assume that a detailed, short-term analysis of the acoustic signal is essential for accurately decoding the speech signal and that this decoding process is rooted in the phonetic segment. This paper presents an alternative view, one in which the time scales required to accurately describe and model spoken language are both shorter and longer than the phonetic segment, and are inherently wedded to the syllable. The syllable reflects a singular property of the acoustic signal - the modulation spectrum - which provides a principled, quantitative framework to describe the process by which the listener proceeds from sound to meaning. The ability to understand spoken language (i.e., intelligibility) vitally depends on the integrity of the modulation spectrum within the core range of the syllable (3-10Hz) and reflects the variation in syllable emphasis associated with the concept of prosodic prominence ("accent"). A model of spoken language is described in which the prosodic properties of the speech signal are embedded in the temporal dynamics associated with the syllable, a unit serving as the organizational interface among the various tiers of linguistic representation.
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Proc. of the International Congress on Acoustics, III 2389-2392, Apr, 2004
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Proc. International Symposium on Room Acoustics: Design and Science, Hyogo, Apr, 2004
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Proc. International Congress on Acoustics, III 2321-2322, Apr, 2004
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Proc. International Congress on Acoustics, III 1969-1972, Apr, 2004
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Proc. International Congress on Acoustics, II 1389-1392, Apr, 2004
Misc.
72-
The Journal of the Institute of Noise Control Engineering of Japan, 48(1) 23-28, Feb, 2024
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日本音響学会研究発表会講演論文集(CD-ROM), 2024, 2024
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J. Acoust. Soc. Jpn., 78(4) 170-175, Apr, 2022
Books and Other Publications
24Presentations
245-
Proc. Spring Meet. Acoust. Soc. Jpn., Mar, 2025
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Proc. Spring Meet. Acoust. Soc. Jpn., Mar, 2025
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Proc. Spring Meet. Acoust. Soc. Jpn., Mar, 2025
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Proc. Spring Meet. Acoust. Soc. Jpn., Mar, 2025
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Proc. Spring Meet. Acoust. Soc. Jpn., Mar, 2025
Professional Memberships
12Works
11Research Projects
38-
Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2024 - Mar, 2027
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科学研究費助成事業, 日本学術振興会, Apr, 2024 - Mar, 2027
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Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2021 - Mar, 2024
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科学研究費助成事業, 日本学術振興会, Apr, 2020 - Mar, 2024
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Research in Priority Areas, Sophia University, Apr, 2020 - Mar, 2023
Industrial Property Rights
10Academic Activities
1Social Activities
1Other
56-
Apr, 2006 - Jun, 2008英語によるプレゼンテーションを学ぶ講義の中で、自分のプレゼンテーションを客観的に学生に示すため、発表風景をビデオに収め、後で学生にそれを見て自己評価させるようにしている。また、同内容で2回目のプレゼンテーションを行わせ、改善する努力を促す工夫もしている。
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2003 - Jun, 2008音響教育に関する委員会の委員を務め、教育セッション（例えば2006年12月に行われた日米音響学会ジョイント会議における教育セッション）をオーガナイズするなど。
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2003 - Jun, 2008音響教育に関する委員会の委員を務め、教育セッション（例えば2004年4月に行われた国際音響学会議における教育セッション）をオーガナイズするなど。特に2005年からは委員長を仰せつかり、精力的に活動している（例えば、2006年10月に国立博物館にて科学教室を開催）。
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Apr, 2002 - Jun, 2008本学に赴任して以来、「Progress Report」と称して研究室の教育研究活動に関する報告書を作成し発行している。これにより、研究室の学生の意識の向上にも役立ち、効果を発揮している。