Masakiyo Fujimoto

Profile Information

Affiliation: Reseracher, Signal Processing Research Group, Media Information Laboratory, NTT Communication Science Laboratories, NTT Corporation

Degree: Dr. Eng.

J-GLOBAL ID: 201101026514537122
researchmap Member ID: B000000532

External link: http://ast-astrec.nict.go.jp/aboutus/member/fujimoto/index-j.html

Masakiyo Fujimoto received B.E., M.E., and Doctor of Engineering degrees all from Ryukoku University in 1997, 2001, and 2005, respectively. From 2004-2006, he worked with ATR Spoken Language Communication Research Laboratories. He is currently a researcher at NTT Communication Science Laboratories. He received the Awaya Award from ASJ in 2003 and the MVE Award from IEICE SIG-MVE, in 2008. His current research interests include noise-robust speech recognition. He is a member of the IEEE, ISCA, IEICE, IPSJ, and ASJ.

Research Interests

Research Areas

Research History

Apr, 2016 - Present

National Institute of Information and Communications Technology
Jul, 2013 - Mar, 2016

日本電信電話(株) NTTコミュニケーション科学基礎研究所
Jan, 2008 - Jun, 2013

研究員, 日本電信電話(株) NTTコミュニケーション科学基礎研究所
Apr, 2006 - Dec, 2007

リサーチアソシエイト, 日本電信電話(株) NTTコミュニケーション科学基礎研究所
Apr, 2005 - Mar, 2006

研究員, (株)国際電気通信基礎技術研究所音声言語コミュニケーション研究所
Apr, 2004 - Mar, 2005

研修研究員, (株)国際電気通信基礎技術研究所音声言語コミュニケーション研究所

Awards

Dec, 2015

IEEE ASRU '15 Best Paper Award Honorable Mention

藤本雅清
Jun, 2011

電子情報通信学会平成23年度ISS査読功労賞

藤本雅清
Mar, 2011

情報処理学会平成22年度山下記念研究賞

藤本雅清
Nov, 2008

MVE賞, 電子情報通信学会 MVE研究会

藤本雅清
Mar, 2003

第20回粟屋潔学術奨励賞, 日本音響学会

藤本雅清

Papers

Integration of Spatial Cue-Based Noise Reduction and Speech Model-Based Source Restoration for Real Time Speech Enhancement

Tomoko Kawase, Kenta Niwa, Masakiyo Fujimoto, Kazunori Kobayashi, Shoko Araki, Tomohiro Nakatani

IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND COMPUTER SCIENCES, E100A(5) 1127-1136, May, 2017 Peer-reviewed
Multi-pass feature enhancement based on generative-discriminative hybrid approach for noise robust speech recognition

Masakiyo Fujimoto, Tomohiro Nakatani

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2016- 5750-5754, May 18, 2016 Peer-reviewed
A GENERATIVE-DISCRIMINATIVE HYBRID APPROACH TO MULTI-CHANNEL NOISE REDUCTION FOR ROBUST AUTOMATIC SPEECH RECOGNITION

Hendrik Mentzner, Shoko Araki, Masakiyo Fujimoto, Totohiro Nakatani

2016 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING PROCEEDINGS, 5740-5744, 2016 Peer-reviewed
Acoustic Event Detection in Speech Overlapping Scenarios Based on High-Resolution Spectral Input and Deep Learning

Miquel Espi, Masakiyo Fujimoto, Tomohiro Nakatani

IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, E98D(10) 1799-1807, Oct, 2015 Peer-reviewed
Exploiting spectro-temporal locality in deep learning based acoustic event detection

Miquel Espi, Masakiyo Fujimoto, Keisuke Kinoshita, Tomohiro Nakatani

EURASIP JOURNAL ON AUDIO SPEECH AND MUSIC PROCESSING, Sep, 2015 Peer-reviewed
Strategies for Distant Speech Recognition in Reverberant Environments

Marc Delcroix, Takuya Yoshioka, Atsunori Ogawa, Yotaro Kubo, Masakiyo Fujimoto, Nobutaka Ito, Keisuke Kinoshita, Miquel Espi, Shoko Araki, Takaaki Hori …

EURASIP Journal on Advances in Signal Processing, 2015 Peer-reviewed
FEATURE ENHANCEMENT BASED ON GENERATIVE-DISCRIMINATIVE HYBRID APPROACH WITH GMMS AND DNNS FOR NOISE ROBUST SPEECH RECOGNITION

Masakiyo Fujimoto, Tomohiro Nakatani

2015 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP), 5019-5023, 2015 Peer-reviewed
Feature extraction strategies in deep learning based acoustic event detection

Miguel Espi, Masakiyo Fujimoto, Keisuke Kinoshita, Tomohiro Nakatani

16TH ANNUAL CONFERENCE OF THE INTERNATIONAL SPEECH COMMUNICATION ASSOCIATION (INTERSPEECH 2015), VOLS 1-5, 2922-2926, 2015 Peer-reviewed
THE NTT CHIME-3 SYSTEM: ADVANCES IN SPEECH ENHANCEMENT AND RECOGNITION FOR MOBILE MULTI-MICROPHONE DEVICES

Takuya Yoshioka, Nobutaka Ito, Marc Delcroix, Atsunori Ogawa, Keisuke Kinoshita, Masakiyo Fujimoto, Chengzhu Yu, Wojciech J. Fabian, Miquel Espi, Takuya Higuchi …

2015 IEEE WORKSHOP ON AUTOMATIC SPEECH RECOGNITION AND UNDERSTANDING (ASRU), 436-443, 2015 Peer-reviewed
EXPLORING MULTI-CHANNEL FEATURES FOR DENOISING-AUTOENCODER-BASED SPEECH ENHANCEMENT

Shoko Araki, Tomoki Hayashi, Marc Delcroix, Masakiyo Fujimoto, Kazuya Takeda, Tomohiro Nakatani

2015 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP), 116-120, 2015 Peer-reviewed
SPECTROGRAM PATCH BASED ACOUSTIC EVENT DETECTION AND CLASSIFICATION IN SPEECH OVERLAPPING CONDITIONS

Miquel Espi, Masakiyo Fujimoto, Yotaro Kubo, Tomohiro Nakatani

2014 4TH JOINT WORKSHOP ON HANDS-FREE SPEECH COMMUNICATION AND MICROPHONE ARRAYS (HSCMA), 117-121, 2014 Peer-reviewed
UNSUPERVISED NON-PARAMETRIC BAYESIAN MODELING OF NON-STATIONARY NOISE FOR MODEL-BASED NOISE SUPPRESSION

Masakiyo Fujimoto, Yotaro Kubo, Tomohiro Nakatani

2014 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP), 2014 Peer-reviewed
Dominance Based Integration of Spatial and Spectral Features for Speech Enhancement

Tomohiro Nakatani, Shoko Araki, Takuya Yoshioka, Marc Delcroix, Masakiyo Fujimoto

IEEE TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING, 21(12) 2516-2531, Dec, 2013 Peer-reviewed
Speech recognition in living rooms: Integrated speech enhancement and recognition system based on spatial, spectral and temporal modeling of sounds

Marc Delcroix, Keisuke Kinoshita, Tomohiro Nakatani, Shoko Araki, Atsunori Ogawa, Takaaki Hori, Shinji Watanabe, Masakiyo Fujimoto, Takuya Yoshioka, Takanobu Oba …

COMPUTER SPEECH AND LANGUAGE, 27(3) 851-873, May, 2013 Peer-reviewed
Prior-shared feature and model space speaker adaptation by consistently employing map estimation

Seong-Jun Hahm, Shinji Watanabe, Atsunori Ogawa, Masakiyo Fujimoto, Takaaki Hori, Atsushi Nakamura

SPEECH COMMUNICATION, 55(3) 415-431, Mar, 2013 Peer-reviewed
Model-based noise suppression using unsupervised estimation of hidden Markov model for non-stationary noise

Masakiyo Fujimoto, Tomohiro Nakatani

14TH ANNUAL CONFERENCE OF THE INTERNATIONAL SPEECH COMMUNICATION ASSOCIATION (INTERSPEECH 2013), VOLS 1-5, 2981-2985, 2013 Peer-reviewed
Frame-wise model re-estimation method based on Gaussian pruning with weight normalization for noise robust voice activity detection

Masakiyo Fujimoto, Shinji Watanabe, Tomohiro Nakatani

SPEECH COMMUNICATION, 54(2) 229-244, Feb, 2012 Peer-reviewed
A TANDEM CONNECTIONIST MODEL USING COMBINATION OF MULTI-SCALE SPECTRO-TEMPORAL FEATURES FOR ACOUSTIC EVENT DETECTION

Miquel Espi, Masakiyo Fujimoto, Daisuke Saito, Nobutaka Ono, Shigeki Sagayama

2012 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP), 2012 Vol.6 4293-4296, 2012 Peer-reviewed
A reliable data selection for model-based noise suppression using unsupervised joint speaker adaptation and noise model estimation

Fujimoto Masakiyo, Nakatani Tomohiro

2012 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2012, 148-153, 2012 Peer-reviewed
LOGMAX OBSERVATION MODEL WITH MFCC-BASED SPECTRAL PRIOR FOR REDUCTION OF HIGHLY NONSTATIONARY AMBIENT NOISE

Tomohiro Nakatani, Takuya Yoshioka, Shoko Araki, Marc Delcroix, Masakiyo Fujimoto

2012 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP), 4029-4032, 2012 Peer-reviewed

Misc.

127

ディープラーニングを用いた実環境における遠隔発話音声処理 (特集未来への羅針盤としてのコミュニケーション科学)

荒木章子, 藤本雅清, 吉岡拓也

NTT技術ジャーナル, 27(9) 17-20, Sep, 2015
Aspects of Feature Extraction in DNN Acoustic Models

115(146) 61-65, Jul 16, 2015
Speech enhancement and recognition for reverberant speech: overview of the NTT REVERB challenge system

IPSJ SIG Notes, 2014(5) 1-4, Jul 17, 2014
A spectrogram-patch-input DNN model for detection and classification of acoustic events in speech overlapping scenarios

ESPI Miquel, FUJIMOTO Masakiyo, KUBO Yotaro, NAKATANI Tomohiro

IEICE technical report. Speech, 114(52) 171-176, May 24, 2014
A spectrogram-patch-input DNN model for detection and classification of acoustic events in speech overlapping scenarios

2014(35) 1-6, May 17, 2014
A Study on Speaker Recognition Based on Decomposition of Periodic and Aperiodic Components

ISHIKAWA Yuki, NISHIDA Masafumi, FUJIMOTO Masakiyo, YAMAMOTO Seiichi

IEICE technical report. Speech, 112(422) 25-30, Jan 30, 2013
Under-Determined Audio Source Separation Based on MAP Spectral Estimation Using Log-Spectral Prior

Iwata Yasuaki, Nakatani Tomohiro, Fujimoto Masakiyo, Yoshioka Takuya, Saito Hirofumi

Technical report of IEICE. EA, 112(347) 29-34, Dec 13, 2012
The Fundamentals, Trends, and Recent Advances of Voice Activity Detection

FUJIMOTO Masakiyo

The Journal of the Institute of Electronics, Information, and Communication Engineers, 95(8) 754-758, Aug 1, 2012
Simultaneous application of speaker adaptation and noise mixture model estimation for noise suppression

FUJIMOTO Masakiyo, WATANABE Shinji, NAKATANI Tomohiro

IEICE technical report. Natural language understanding and models of communication, 111(364) 113-118, Dec 12, 2011
Microphone array speech processing techniques for conversation scene analysis

ARAKI Shoko, FUJIMOTO Masakiyo, YOSHIOKA Takuya, HORI Takaaki, NAKATANI Tomohiro

IEICE technical report. Signal processing, 111(27) 83-88, May 5, 2011
A Robust On-line Estimation Method of Noise Mixture Model for Noise Suppression

FUJIMOTO Masakiyo, NAKATANI Tomohiro, WATANABE Shinji

IEICE technical report. Speech, 111(28) 7-12, May 5, 2011
Microphone array speech processing techniques for conversation scene analysis

ARAKI Shoko, FUJIMOTO Masakiyo, YOSHIOKA Takuya, HORI Takaaki, NAKATANI Tomohiro

IEICE technical report. Speech, 111(28) 83-88, May 5, 2011
Noise suppression method based on bias-residual component decomposition and optimization

2010(5) 1-6, Feb, 2011
Noise suppression method based on bias-residual component decomposition and optimization

FUJIMOTO Masakiyo, WATANABE Shinji, NAKATANI Tomohiro

IEICE technical report. Speech, 110(357) 43-48, Dec 13, 2010
いつ誰が何を話したかを即座に認識するオンライン会話分析システム~(1)コンセプトとデザイン~

堀貴明, 荒木章子, 吉岡拓也, 大庭隆伸, 藤本雅清, 渡部晋治, 小川厚徳, 大塚和弘, 三上弾, 木下慶介 …

日本音響学会研究発表会講演論文集(CD-ROM), 2010 ROMBUNNO.2-9-6, Sep 7, 2010
CENSREC-1-AV An evaluation framework for multimodal speech recognition

Satoshi Tamura, Chiyomi Miyajima, Norihide Kitaoka, Kazuya Takeda, Takeshi Yamada, Tetsuya Takiguchi, Satoru Tsuge, Kazumasa Yamamoto, Takanobu Nishiura, Masato Nakayama …

IPSJ SIG Notes, 2010(7) 1-6, Jul 15, 2010
The Fundamentals and Recent Progress of Voice Activity Detection

FUJIMOTO Masakiyo

IEICE technical report. Speech, 110(81) 7-12, Jun 10, 2010
Voice activity detection using Dirichlet prior

Fujimoto Masakiyo, Watanabe Shinji, Nakatani Tomohiro

IEICE technical report, 109(355) 65-70, Dec 21, 2009
Voice Activity Detection Using Dirichlet Prior

Masakiyo Fujimoto, Shinji Watanabe, Tomohiro Nakatani

IPSJ SIG Notes, 2009(12) 1-6, Dec 14, 2009
Advances in voice activity detection

Ishizuka Kentaro, Fujimoto Masakiyo, Nakatani Tomohiro

The Journal of the Acoustical Society of Japan, 65(10) 537-543, Oct 1, 2009

Teaching Experience

メディアデザイン (龍谷大学)

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