Abstract:
In beamformer design, the microphone array configuration is often prescribed and the filter coefficients are varied in order to improve on the noise reduction performance...Show MoreMetadata
Abstract:
In beamformer design, the microphone array configuration is often prescribed and the filter coefficients are varied in order to improve on the noise reduction performance. However, the positions of the microphone elements play an important role in the overall performance and should be optimized at the same time. This problem is addressed in this paper. In order to understand the performance improvement through location movements, we first look at the design with an infinite filter length, which gives the performance limit for finite filter length designs. When the filter length is finite, both the filter coefficients and the placement of the microphone array are decision variables. In both situations, the problems can be formulated as constrained optimization problems. As the filter length increases, we show that the performance converges quickly to the limit. For illustration, two numerical examples are solved. Comparing with several popular configurations, we show that the performance of the optimized configuration improves significantly.
Published in: IEEE Transactions on Signal Processing ( Volume: 60, Issue: 3, March 2012)
College of Mathematics, Chongqing Normal University, Chongqing, China
Department of Applied Mathematics, Hong Kong Polytechnic University, Hong Kong, China
Zhi Guo Feng received the B.S. degree in mathematics, and the Ph.D. degree in operational research and control theory from Sun Yat-Sen University, China, in 2000 and 2006, respectively.
Since 2006, he has been with Chongqing Normal University, China. He was a Research Associate with the Curtin University of Technology from 2006 to 2008 and a Postdoctoral Fellow with the Hong Kong Polytechnic University from 2008 to 2009, w...Show More
Zhi Guo Feng received the B.S. degree in mathematics, and the Ph.D. degree in operational research and control theory from Sun Yat-Sen University, China, in 2000 and 2006, respectively.
Since 2006, he has been with Chongqing Normal University, China. He was a Research Associate with the Curtin University of Technology from 2006 to 2008 and a Postdoctoral Fellow with the Hong Kong Polytechnic University from 2008 to 2009, w...View more
Department of Applied Mathematics, Hong Kong Polytechnic University, Hong Kong, China
Ka Fai Cedric Yiu received the M.Sc. degree from the University of Dundee and the University of London, and the D.Phil. degree from the University of Oxford, U.K.
Over the century, he had worked closely with the industry on different projects with the University of Oxford and the University College of London. He started his lecturing career at the University of Hong Kong. He is currently with the Hong Kong Polytechnic Univ...Show More
Ka Fai Cedric Yiu received the M.Sc. degree from the University of Dundee and the University of London, and the D.Phil. degree from the University of Oxford, U.K.
Over the century, he had worked closely with the industry on different projects with the University of Oxford and the University College of London. He started his lecturing career at the University of Hong Kong. He is currently with the Hong Kong Polytechnic Univ...View more
Department of Electrical and Computer Engineering, Curtin University of Technology, Perth, Australia
Sven Erik Nordholm (S'91–M'91–SM'04) received the Ph.D. degree in signal processing in 1992, the Licentiate of engineering in 1989, and the Msc.E.E. degree (Civilingenjör) in 1983, all from Lund University, Sweden.
He was one of the founding members of the Department of Signal Processing, Blekinge Institute of Technology (BTH), Sweden, in 1990. At BTH, he held positions as Lecturer, Senior Lecturer, Associate Professor, an...Show More
Sven Erik Nordholm (S'91–M'91–SM'04) received the Ph.D. degree in signal processing in 1992, the Licentiate of engineering in 1989, and the Msc.E.E. degree (Civilingenjör) in 1983, all from Lund University, Sweden.
He was one of the founding members of the Department of Signal Processing, Blekinge Institute of Technology (BTH), Sweden, in 1990. At BTH, he held positions as Lecturer, Senior Lecturer, Associate Professor, an...View more
Contents College of Mathematics, Chongqing Normal University, Chongqing, China
Department of Applied Mathematics, Hong Kong Polytechnic University, Hong Kong, China
Zhi Guo Feng received the B.S. degree in mathematics, and the Ph.D. degree in operational research and control theory from Sun Yat-Sen University, China, in 2000 and 2006, respectively.
Since 2006, he has been with Chongqing Normal University, China. He was a Research Associate with the Curtin University of Technology from 2006 to 2008 and a Postdoctoral Fellow with the Hong Kong Polytechnic University from 2008 to 2009, where he is currently a Research Associate. His research interests include theory and application of optimization and optimal control in areas, such as signal processing and hybrid system.
Zhi Guo Feng received the B.S. degree in mathematics, and the Ph.D. degree in operational research and control theory from Sun Yat-Sen University, China, in 2000 and 2006, respectively.
Since 2006, he has been with Chongqing Normal University, China. He was a Research Associate with the Curtin University of Technology from 2006 to 2008 and a Postdoctoral Fellow with the Hong Kong Polytechnic University from 2008 to 2009, where he is currently a Research Associate. His research interests include theory and application of optimization and optimal control in areas, such as signal processing and hybrid system.View more
Department of Applied Mathematics, Hong Kong Polytechnic University, Hong Kong, China
Ka Fai Cedric Yiu received the M.Sc. degree from the University of Dundee and the University of London, and the D.Phil. degree from the University of Oxford, U.K.
Over the century, he had worked closely with the industry on different projects with the University of Oxford and the University College of London. He started his lecturing career at the University of Hong Kong. He is currently with the Hong Kong Polytechnic University. He has published more than 40 journal publications and given over 30 conference presentations. He holds a U.S. patent in signal processing. His current research interests include optimization and optimal control, signal processing, sensor array processing, FPGA, and algorithm designs.
Dr. Yiu has served on the Program Committee of the ASAP conference for several years and has served on the Organizing Committee of a number of conferences including FPT02, LSCM06, and FERM08. He has also organized a number of special sessions in conferences including ICOTA7, CISP08, ISCE2009, and EURO2009. He was an Invited Speaker for several international conferences.
Ka Fai Cedric Yiu received the M.Sc. degree from the University of Dundee and the University of London, and the D.Phil. degree from the University of Oxford, U.K.
Over the century, he had worked closely with the industry on different projects with the University of Oxford and the University College of London. He started his lecturing career at the University of Hong Kong. He is currently with the Hong Kong Polytechnic University. He has published more than 40 journal publications and given over 30 conference presentations. He holds a U.S. patent in signal processing. His current research interests include optimization and optimal control, signal processing, sensor array processing, FPGA, and algorithm designs.
Dr. Yiu has served on the Program Committee of the ASAP conference for several years and has served on the Organizing Committee of a number of conferences including FPT02, LSCM06, and FERM08. He has also organized a number of special sessions in conferences including ICOTA7, CISP08, ISCE2009, and EURO2009. He was an Invited Speaker for several international conferences.View more
Department of Electrical and Computer Engineering, Curtin University of Technology, Perth, Australia
Sven Erik Nordholm (S'91–M'91–SM'04) received the Ph.D. degree in signal processing in 1992, the Licentiate of engineering in 1989, and the Msc.E.E. degree (Civilingenjör) in 1983, all from Lund University, Sweden.
He was one of the founding members of the Department of Signal Processing, Blekinge Institute of Technology (BTH), Sweden, in 1990. At BTH, he held positions as Lecturer, Senior Lecturer, Associate Professor, and Professor. from 1999 to 2002, he was the Director of ATRI and Professor at the Curtin University of Technology, Perth, Western Australia. from 2002 to 2009, he was the Director of Signal Processing Laboratory, WATRI, Western Australian Telecommunication Research Institute, a joint institute between The University of Western Australia and Curtin University of Technology. He is also Chief Scientist and co-founder of a start-up company, Sensear, providing voice communication in extreme noise conditions. His main research efforts have been spent in the fields of speech enhancement, adaptive and optimum microphone arrays, acoustic echo cancellation, adaptive signal processing, subband adaptive filtering, and filter design.
Dr. Nordholm is an Associate Editor EURASIP Journal on Advances in Signal Processing.
Sven Erik Nordholm (S'91–M'91–SM'04) received the Ph.D. degree in signal processing in 1992, the Licentiate of engineering in 1989, and the Msc.E.E. degree (Civilingenjör) in 1983, all from Lund University, Sweden.
He was one of the founding members of the Department of Signal Processing, Blekinge Institute of Technology (BTH), Sweden, in 1990. At BTH, he held positions as Lecturer, Senior Lecturer, Associate Professor, and Professor. from 1999 to 2002, he was the Director of ATRI and Professor at the Curtin University of Technology, Perth, Western Australia. from 2002 to 2009, he was the Director of Signal Processing Laboratory, WATRI, Western Australian Telecommunication Research Institute, a joint institute between The University of Western Australia and Curtin University of Technology. He is also Chief Scientist and co-founder of a start-up company, Sensear, providing voice communication in extreme noise conditions. His main research efforts have been spent in the fields of speech enhancement, adaptive and optimum microphone arrays, acoustic echo cancellation, adaptive signal processing, subband adaptive filtering, and filter design.
Dr. Nordholm is an Associate Editor EURASIP Journal on Advances in Signal Processing.View more
