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Filter Bank Design for Subband Adaptive Microphone Arrays

de Haan, Jan-Mark; Grbic, Nedelko LU ; Claesson, Ingvar LU and Nordholm, Sven (2003) In IEEE/ACM Transactions on Audio, Speech, and Language Processing 11(1). p.14-23
Abstract
This paper presents a new method for the design of oversampled uniform DFT-filter banks for the special application of subband adaptive beamforming with microphone arrays. Since array applications rely on the fact that different source positions give rise to different signal delays, a beamformer alters the phase information of the signals. This in turn leads to signal degradations when perfect reconstruction filter banks are used for the subband decomposition and reconstruction. The objective of the filter bank design is to minimize the magnitude of all aliasing components individually, such that aliasing distortion is minimized although phase alterations occur in the subbands. The proposed method is evaluated in a car hands-free mobile... (More)
This paper presents a new method for the design of oversampled uniform DFT-filter banks for the special application of subband adaptive beamforming with microphone arrays. Since array applications rely on the fact that different source positions give rise to different signal delays, a beamformer alters the phase information of the signals. This in turn leads to signal degradations when perfect reconstruction filter banks are used for the subband decomposition and reconstruction. The objective of the filter bank design is to minimize the magnitude of all aliasing components individually, such that aliasing distortion is minimized although phase alterations occur in the subbands. The proposed method is evaluated in a car hands-free mobile telephony environment and the results show that the proposed method offers better performance regarding suppression levels of disturbing signals and much less distortion to the source speech. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE/ACM Transactions on Audio, Speech, and Language Processing
volume
11
issue
1
pages
10 pages
publisher
Piscataway, NJ : Institute of Electrical and Electronics Engineers
external identifiers
  • Scopus:0037229734
ISSN
2329-9290
DOI
10.1109/TSA.2002.807353
language
English
LU publication?
no
id
cc183354-783e-49d8-9839-41fda85846d3
date added to LUP
2016-06-23 13:57:49
date last changed
2017-01-01 08:28:56
@article{cc183354-783e-49d8-9839-41fda85846d3,
  abstract     = {This paper presents a new method for the design of oversampled uniform DFT-filter banks for the special application of subband adaptive beamforming with microphone arrays. Since array applications rely on the fact that different source positions give rise to different signal delays, a beamformer alters the phase information of the signals. This in turn leads to signal degradations when perfect reconstruction filter banks are used for the subband decomposition and reconstruction. The objective of the filter bank design is to minimize the magnitude of all aliasing components individually, such that aliasing distortion is minimized although phase alterations occur in the subbands. The proposed method is evaluated in a car hands-free mobile telephony environment and the results show that the proposed method offers better performance regarding suppression levels of disturbing signals and much less distortion to the source speech.},
  articleno    = {1},
  author       = {de Haan, Jan-Mark and Grbic, Nedelko and Claesson, Ingvar and Nordholm, Sven},
  issn         = {2329-9290},
  language     = {eng},
  number       = {1},
  pages        = {14--23},
  publisher    = {Piscataway, NJ : Institute of Electrical and Electronics Engineers},
  series       = {IEEE/ACM Transactions on Audio, Speech, and Language Processing},
  title        = {Filter Bank Design for Subband Adaptive Microphone Arrays},
  url          = {http://dx.doi.org/10.1109/TSA.2002.807353 },
  volume       = {11},
  year         = {2003},
}