Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/16163
Title: Placement design of microphone arrays in near-field broadband beamformers
Authors: Feng, ZG
Yiu, KFC 
Nordholm, SE
Keywords: Beamformer
microphone array
placement design
Issue Date: 2012
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on signal processing, 2012, v. 60, no. 3, 6096453, p. 1195-1204 How to cite?
Journal: IEEE transactions on signal processing 
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.
URI: http://hdl.handle.net/10397/16163
ISSN: 1053-587X
EISSN: 1941-0476
DOI: 10.1109/TSP.2011.2178491
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

16
Last Week
0
Last month
0
Citations as of Aug 13, 2017

WEB OF SCIENCETM
Citations

16
Last Week
0
Last month
1
Citations as of Aug 12, 2017

Page view(s)

37
Last Week
1
Last month
Checked on Aug 13, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.