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Minimax filters for microphone arrays

Lau, Buon Kiong LU ; Leung, Yee Hong; Teo, Kok Lay and Sreeram, Victor (1999) In IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing 46(12). p.1522-1524
Abstract
Conventionally, minimax spatial/spectral filters for microphone arrays are designed by first discretizing the spatial and frequency domains into a finite number of grid points and then performing the optimization over these points. The drawback with this approach is that the response of the spatial/spectral filters in between the grid points can be poor. More recently, an approach that performs the minimax design over the continuum of points in the decision space has appeared in the literature. In this brief, we describe an approach to solving this continuous decision space design problem that is numerically more elegant and efficient. The effectiveness of the new method is illustrated by a numerical example.
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author
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing
volume
46
issue
12
pages
1522 - 1524
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • Scopus:0033281286
language
English
LU publication?
no
id
dee8f5cd-d727-4b63-94c4-9e4559189ef6 (old id 794640)
date added to LUP
2007-12-27 08:59:37
date last changed
2016-11-20 04:26:03
@misc{dee8f5cd-d727-4b63-94c4-9e4559189ef6,
  abstract     = {Conventionally, minimax spatial/spectral filters for microphone arrays are designed by first discretizing the spatial and frequency domains into a finite number of grid points and then performing the optimization over these points. The drawback with this approach is that the response of the spatial/spectral filters in between the grid points can be poor. More recently, an approach that performs the minimax design over the continuum of points in the decision space has appeared in the literature. In this brief, we describe an approach to solving this continuous decision space design problem that is numerically more elegant and efficient. The effectiveness of the new method is illustrated by a numerical example.},
  author       = {Lau, Buon Kiong and Leung, Yee Hong and Teo, Kok Lay and Sreeram, Victor},
  language     = {eng},
  number       = {12},
  pages        = {1522--1524},
  publisher    = {ARRAY(0x8c1e700)},
  series       = {IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing},
  title        = {Minimax filters for microphone arrays},
  volume       = {46},
  year         = {1999},
}