UNOKI, Masashi Professor, Deputy Dean, Director of Research Center for Biological Function and Sensory Information, Director of Human Information Science Research Area
Information Science, Human Information Science, Research Center for Biological Function and Sensory Information
◆Degrees
M.S. and Ph.D. from Japan Advanced Institute of Science and Technology (1996,1999) 北陸先端科学技術大学院大学
◆Professional Experience
2000 - 2001 : 日本学術振興会特別研究員(DC2)(1998),ATR人間情報通信研究所 客員研究員(1999),ケンブリッジ大学CNBH客員研究員(2000-2001),日本学術振興会特別研究員(PD,北陸先端科学技術大学院大学 情報科学研究科)(1999-2001)
2000 - 2001 : JSPS Research Fellow (DC2)(1998), Visiting researcher, ATR Human Information Processing Laboratories (1999), Visiting Associate, CNBH, Univ. of Cambridge (2000-2001), JSPS Research Fellow (PD)(1999-2001)
◆Specialties
Intelligent robotics, Perceptual information processing, Intelligent informatics
◆Research Keywords
Audio Information Hiding, 音声信号処理, 聴覚情景解析, 聴覚モデル, Speech dereverberation, Computational Auditory Scene Analysis, Auditory filterbank
◆Research Interests
Construction of the auditory filterbank
The aim of this work is to construct the auditory filterbank that can account psycho-acoustical data and physiological data for frequency selectivity of the auditory system.
Computational Auditory Scene Analysis
The study of computational theory of the auditory system tries to answer the following questions:
Extraction of the fundamental frequency of speech in real environments
Extraction of the fundamental frequency (F0) of target speech is an important problem not only in speech analysis/synthesis but also in various speech signal processings such as speech segregation. Various F0 estimation methods have been proposed, but the most of these methods have the drawbacks for estimating accurate F0s of target speech in real environments. My approach is to construct an estimation model based on computational auditory scene analysis (CASA).
A study on the speech dereverberation method
To dereverberate the original signal from a reverberant signal is an important issue concerning speech signal processing such as preprocessing for speech recognition systems. Most of the inverse filtering methods have to measure the impulse response of the room acoustics to determine its inverse filter before the dereverberation. Moreover, the impulse response temporally varies with various environmental factors (temperature etc.), so the room acoustics have to be measured each time these methods are used. In this work, it has been trying to model a speech dereverberation based on the Modulation Transfer Function, without measuring the impulse response of room acoustics.

■Publications

◆Published Papers
Contributions of Temporal Modulation Cues in Temporal Amplitude Envelope of Speech to Urgency Perception
Masashi Unoki, Miho Kawamura, Maori Kobayashi, Shunsuke Kidani, Junfeng Li, Masato Akagi
Applied Sciences, 13, 10, 6239-6239, 2023
Methods for improving word intelligibility of bone-conducted speech by using bone-conduction headphones
Teruki Toya, Maori Kobayashi, Kenichi Nakamura, Masashi Unoki
Applied Acoustics, 207, 109337-109337, 2023
Method of estimating three-dimensional direction-of-arrival based on monaural modulation spectrum
Rui Wang, Nguyen Khanh Bui, Daisuke Morikawa, Masashi Unoki
Applied Acoustics, 203, 109215-109215, 2023
◆Misc
定常雑音下における母音発話の変化と聴覚スペクトル表現の検討—Study on the change of vowel utterances and the auditory spectral representation under constant noise conditions
上江洲 安史, 赤木 正人, 鵜木 祐史
聴覚研究会資料 = Proceedings of the auditory research meeting, 52, 8, 631-636, 2022
骨導提示音声の了解度改善のための子音強調処理の改良—Improvement of consonant emphasis method for bone-conduction speech intelligibility
王 思成, 上江洲 安史, 鳥谷 輝樹, 鵜木 祐史
聴覚研究会資料 = Proceedings of the auditory research meeting, 52, 7, 543-548, 2022
ISO/TC 43・ISO/TC 43/SC 1・ISO/TC 43/SC 2・ISO/TC 43/SC 3総会 : 音響に関する国際規格の審議状況 : 2021パリ会議(オンライン開催)—ISO/TC 43, ISO/TC 43/SC 1, ISO/TC 43/SC 2 and ISO/TC 43/SC 3 Plenary Meetings : Progress Report of International Standardization on Acoustics : 2021 Paris Meetings (held online)
鈴木 陽一, 倉片 憲治, 今泉 博之, 佐藤 洋, 赤松 友成, 山崎 隆志, 藤坂 洋一, 内田 匠, 鵜木 祐史, 桑野 園子, 山田 一郎, 大島 俊也, 高橋 幸雄, 下田 康平, 白橋 良宏, 杉江 聡, 小林 知尋, 永幡 幸司, 森長 誠, 白木 秀児, 平光 厚雄, 古賀 貴士, 平川 侑, 澤田 浩一
騒音制御 = The journal of the INCE of Japan, 46, 2, 89-94, 2022
An investigation of the effect of auditory feedback on speech production in vowel utterances during noise presentation.
上江洲安史, 赤木正人, 鵜木祐史
日本音響学会研究発表会講演論文集(CD-ROM), 2022, -, 2022
A report of ASJ remote meeting in Autumn 2020: For a record of unity power of ASJ
Y. Iwaya, S. Araki, R. Nishimura, T. Arai, M. Unoki
Journal of the Acoustical Society of Japan, 77, 2, 149-154, 2021
◆Books
「マスキング」,音響キーワードブック 日本音響学会編
コロナ社ISBN:978-4-339-00880-7, 2016
Method of Digital-Audio Watermarking Based on Cochlear Delay Characteristics, Multimedia Information Hiding Technologies and Methodologies for Controlling Data, Ed. Kazuhiko Kondo, Chapter 2
pp. 42-70, IGI Global, 2012
聴覚モデル
コロナ社, 2011
Effects of spatial cues on detectability of alarm signals in noisy environments, PRINCIPLES AND APPLICATIONS OF SPATIAL HEARING, Edited by Yoiti Suzuki, Douglas Brungart, Hiroaki Kato, Kazuhiro Iida, Densil Cabrera, & Yukio Iwaya
484-493, World Scientific,, 2011
◆Conference Activities & Talks
緊迫感知覚に寄与する音声の振幅包絡線情報の検討
日本音響学会騒音振動研究会, 2019
楽音を模した調波複合音の雑音駆動合成音のピッチ知覚の検討
日本音響学会聴覚研究会, 2019
Study on cochlear-delay based audio information hiding by linear time-variant IIR filter
日本音響学会2019年度秋季研究発表会, 2019
骨導音声の外耳道内放射特性の推定
日本音響学秋季研究発表会, 2019
雑音残響環境における雑音駆動音声の非言語情報知覚の検討
日本音響学会聴覚研究会, 2019

■Teaching Experience

Discrete Signal Processing, Human Perceptual Systems and its Models, Statistical Signal Processing, 離散信号処理特論, 知覚情報処理特論, 統計的信号処理特論

■Contributions to  Society

◆Academic Society Affiliations
信号処理学会, International Speech Communication Association, 電子情報通信学会, 日本音響学会, Research Institute of Signal Processing, Japan, Information and Communication Engineers, Institute of Electronics, The Acoustical Society of Japan, Institute of Electrical and Electronics Engineers, Acoustical Society of America
◆Academic Contribution
2017 International Workshop on Nonlinear Circuits and Signal Processing (NCSP17) Committee member (General Chair) , JAIST, Prof. Unoki Masashi , 2017 - 2017 , Guam, USA
2016 International Workshop on Nonlinear Circuits and Signal Processing (NCSP16) Committee member (General Vice Chair) , RISP , 2016 - 2016 , Honolulu, Hawaii, USA
The 14th IWDW, International Workshop on Digital-forensics and Watermarking (IWDW 2015) , Organizaing committee, , 2015 - 2015 , Tokyo University of Sciences

■Academic  Awards

・ Best paper award , Masashi Unoki , 11th International Conference on Social Computing and Social Media (SCSM 2019) , 2019
・ Best paper award , Masashi Unoki , 14th International Conference on Intelligent Information Hiding and Multimedia Signal Processing (II , 2018
・ 平成30年度支部学会活動貢献賞 , 日本音響学会北陸支部 , 2018