UNOKI, Masashi Professor, Dean of School of Information Science
School of Information Science, Human Life Design Area, School of Information Science
◆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
Multi-Subspace Echo Hiding Based on Time-Frequency Similarities of Audio Signals
Shengbei Wang, Weitao Yuan, Masashi Unoki
IEEE/ACM Transactions on Audio, Speech, and Language Processing, 28, 2349-2363, 2020
Improvement in Bone-Conducted Speech Restoration Using Linear Prediction and Long Short-Term Memory Model
Huy Quoc Nguyen, Masashi Unoki
Journal of Signal Processing, 24, 4, 175-178, 2020
Audio Information Hiding Based on Cochlear Delay Characteristics with Optimized Segment Selection
Candy Olivia Mawalim, Masashi Unoki
Advances in Intelligent Systems and Computing, 128-138, 2020
Audio Information Hiding Techniques Based on Human Auditory Characteristics
UNOKI Masashi
IEICE ESS Fundamentals Review, 13, 4, 284-293, 2020
Speech Emotion Recognition Using 3D Convolutions and Attention-Based Sliding Recurrent Networks with Auditory Front-Ends
Zhichao Peng, Xingfeng Li, Zhi Zhu, Masashi Unoki, Jianwu Dang, Masato Akagi
IEEE Access, 8, 16560-16572, 2020
◆Misc
Subjective evaluation for mixing ratio of bone-conducted to air-conducted speech in own-voice perception
鳥谷 輝樹, Birkholz Peter, 鵜木 祐史
聴覚研究会資料 = Proceedings of the auditory research meeting, 50, 3, 153-158, 2020
Study on method for calculating loudness and sharpness using auditory filterbank
磯山 拓都, 木谷 俊介, 鵜木 祐史
聴覚研究会資料 = Proceedings of the auditory research meeting, 50, 2, 129-134, 2020
Study on method for calculating loudness of stationary sound using auditory filterbank
磯山 拓都, 木谷 俊介, 鵜木 祐史
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 119, 439, 273-278, 2020
Study on cues in pitch perception of noise-vocoded harmonic complex tones
寳坂 友希菜, 木谷 俊介, 鵜木 祐史
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 119, 414, 101-106, 2020
Study on cues in pitch perception of noise-vocoded harmonic complex tones
寳坂 友希菜, 木谷 俊介, 鵜木 祐史
聴覚研究会資料 = Proceedings of the auditory research meeting, 50, 1, 101-106, 2020
◆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