Séminaire d’Akihiko Sugiyama (NEC Corp., Tokyo) Partager ce post

Dr. A. Sugiyama, distinguished IEEE lecturer, is giving a seminar at Telecom ParisTech on Friday November 27th, at 2pm, in Amphi Opale on the topic of Phase: Unexplored Wilderness in Signal Enhancement.


This lecture presents importance and possibilities of phase information in signal enhancement. Phase has not been given as much attention in signal enhancement as its counterpart; i.e. magnitude. This is partially because Wang and Lim experimentally showed in 1982 that except for some conditions, accurate phase does not help improve the SNR. After three decades, signal processing applications have significantly expanded and with these new applications, some of the conditions Wang and Lim did not take into consideration have come up in the spotlight. Two examples of those new applications covered in this talk are impact noise suppression and mechanical noise suppression. Consumer products that need these applications have a huge market today. Different uses of phase information in those applications are presented with audio demonstrations.

About the speaker

Akihiko (Ken) Sugiyama (F) is a Research Fellow of Information and Media Processing Laboratories at NEC Corporation, Tokyo, Japan. He received his B. E., M. E., and Dr. of Eng. degrees all in Electrical Engineering from Tokyo Metropolitan University, Tokyo, Japan, in 1979, 1981, and 1998, respectively. He joined NEC Corporation in 1981 and has been engaged in research and development of signal processing algorithms and systems for transmission terminals and consumer products such as trunk switching systems, subscriber-loop transmission systems, remote conference systems, PCs (personal computer), cellphone handsets, speech/audio codecs, voice recorders, digital still cameras, camcorders, and related DSP (digital signal processor) software. He was a Visiting Scientist at the Department of Electrical and Computer Engineering, Concordia University, Montreal, Canada (1987-1988), and served as a doctoral research supervisor at Traitement du Signal et Télécommunications, Université de Rennes 1, Rennes, France (1996-1998 and 2003-2006), and a Part Time Lecturer at Tokyo Institute of Technology (2002-2009), Tokyo Metropolitan University (2004, 2006, and 2007), Keio University (2008), Tokyo Agriculture and Technology University (2008-2013), Kyoto University (2009), and Niigata University (2010) all in Japan.

Dr. Sugiyama was elected IEEE Fellow in 2011 “for contributions to speech and audio signal processing” and has served as Member, Audio and Acoustic Signal Processing (formerly Audio and Electroacoustics) Technical Committee (1990-2009), the Vice Chair (2010) and the Chair (2011-2012); the Conference Board as a Member (2005-2007) and the Secretary and Member at Large (2009-2010); Industrial Relations Committee as a Member (2011-Present); and the organization committees of IEEE International Conference on Acoustics, Speech and Signal Processing as the Far-East Liaison (ICASSP 2001) and a Technical Program Chair (ICASSP 2012) as well as IEEE International Conference on Emerging Signal Processing Applications (ESPA 2012) as the Tutorial Chair. He was the Vice Chair (2007-2008) and the Chair (2009-2010) of Japan Chapter, IEEE Signal Processing Society, and an Associate Editor for IEEE Transactions on Signal Processing (1994-1996) and is currently the Vice Chair of Chapter Operations Committee, IEEE Japan Council (2013-Present).

Dr. Sugiyama was elevated to Fellow of IEICE (The Institute of Electronics, Information and Communication Engineers), a Japan-based society to cover signal processing, in 2011 “for contributions to audio and acoustic signal processing.” He has served Signal Processing Technology Group (formerly Technical Group on Digital Signal Processing), Engineering Science Society, IEICE, as an Associate Secretary (1994-1995), a Secretary (1995-1997), a Vice Chair (2007-2008), and the Chair (2009) as well as the Profitability Improvement Committee, IEICE Engineering Science Committee as a Member (2000-2001). He was the Director, Service Activities, IEICE Engineering Sciences Society (2000-2002). He has been the Local Liaison Officer for Japan of the EURASIP Administration Committee (2009-Present). He has served as an Associate Editor for Circuits, Systems and Signal Processing, Birkhäuser (1999-2011), an Associate Editor for IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (2000-2002), and Guest Associate Editors for six Special Sections of the same transaction (1994-1999) as well as the Guest Editor-in-Chief for Special Section on Signal Processing of the same transaction (2009).

Dr. Sugiyama was a member of Japanese delegation to ISO/IEC JTC1/SC29/WG11 for MPEG Audio Standardization (1990-1994, 1998, 2002, 2007-2008), the Interim Chair, Audio Subgroup, ISO/IEC JTC1/SC29/WG11 at Angra dos Reis Meeting, Brazil (1992). He also served as the Secretary (1991-1996) of SC29/WG11 Audio Subcommittee and a Member of SC29 Committee (1992-1996), both of Information Technology Standards Commission of Japan, Information Processing Society of Japan. He has drafted four Japanese Industrial Standards which cover MPEG-1, MPEG-2/BC, MPEG-2/AAC, and MPEG-4 as the Chair of Audio Subworking Group (SWG3: 1993-1995, SWG4: 1995-1996, 2001-2003), a Member of MPEG JIS Standardization Working Group (WG8: 1993-1998), MPEG-1 JIS Standardization Subworking Group (SWG1: 1996-1998), MPEG-2 JIS Standardization Subworking Group (SWG2: 1996-1998), MPEG JIS Standardization Working Group (WG6: 1998-2001), and MPEG JIS Standardization Working Group (WG5: 2001-2003), all of Image Processing Technology and Standardization and Research Committee, Image Processing Technology Standardization Center, Japanese Standards Association.

Dr. Sugiyama is a recipient of Shinohara Memorial Academic Encouragement Award from IEICE (1987), Ohm Technology Award from The Promotion Foundation for Electrical Science and Engineering (2001 and 2013), the Best Paper Award from IEICE (2002), the Incentive Award from Japanese Society of Artificial Intelligence (2005), the Achievement Award from IEICE (2006), the Sankei Newspaper Award of Fuji-Sankei Business I, Advanced Technology Award from The Nikkan Kogyo Shinbun Ltd. (2010), and Local Commendation for Invention in Kanto Region from Japan Institute of Invention and Innovation (2011).

Dr. Sugiyama’s current research interests are in signal processing and its applications to commercial products and services. He is an author of fifteen book chapters on audio and acoustic signal processing in Japanese and English with one Korean translation. He has published more than 100 technical papers in journals and at international conferences and is the inventor or a co-inventor of 150 registered patents in Japan, the United States, Canada, Australia, and EPC (European Patent Convention) with more pending.

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