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Performance limits in subband beamforming

Nordholm, Sven; Claesson, Ingvar LU and Grbic, Nedelko LU (2003) In IEEE/ACM Transactions on Audio, Speech, and Language Processing 11(3). p.193-203
Abstract

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This paper analyzes subband beamforming schemes mainly aimed at speech enhancement and acoustic echo suppression applications such as hands-free telephony for both mobile and office environments, Internet telephony and video conferencing. Analytical descriptions of both causal finite-length and noncausal infinite-length subband microphone array structures are given. More specifically, this paper compares finite Wiener filter performance with the noncausal Wiener solution, giving a comprehensive theoretical suppression limit. It is shown that even short filters will yield a good approximation of the infinite solution, provided that the element spacing and temporal sampling is matched to the frequency band of... (More)

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This paper analyzes subband beamforming schemes mainly aimed at speech enhancement and acoustic echo suppression applications such as hands-free telephony for both mobile and office environments, Internet telephony and video conferencing. Analytical descriptions of both causal finite-length and noncausal infinite-length subband microphone array structures are given. More specifically, this paper compares finite Wiener filter performance with the noncausal Wiener solution, giving a comprehensive theoretical suppression limit. It is shown that even short filters will yield a good approximation of the infinite solution, provided that the element spacing and temporal sampling is matched to the frequency band of interest. Typically, 10-20 FIR taps are sufficient in each subband. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE/ACM Transactions on Audio, Speech, and Language Processing
volume
11
issue
3
pages
11 pages
publisher
Piscataway, NJ : Institute of Electrical and Electronics Engineers
external identifiers
  • Scopus:0038782386
ISSN
2329-9290
DOI
10.1109/TSA.2003.811543
language
English
LU publication?
yes
id
850a9129-c2a1-4d7d-a6c9-0eda290bf57f
date added to LUP
2016-06-23 13:59:11
date last changed
2016-10-13 05:10:43
@misc{850a9129-c2a1-4d7d-a6c9-0eda290bf57f,
  abstract     = {<br/>Request Permissions<br/>This paper analyzes subband beamforming schemes mainly aimed at speech enhancement and acoustic echo suppression applications such as hands-free telephony for both mobile and office environments, Internet telephony and video conferencing. Analytical descriptions of both causal finite-length and noncausal infinite-length subband microphone array structures are given. More specifically, this paper compares finite Wiener filter performance with the noncausal Wiener solution, giving a comprehensive theoretical suppression limit. It is shown that even short filters will yield a good approximation of the infinite solution, provided that the element spacing and temporal sampling is matched to the frequency band of interest. Typically, 10-20 FIR taps are sufficient in each subband.},
  author       = {Nordholm, Sven and Claesson, Ingvar and Grbic, Nedelko},
  issn         = {2329-9290},
  language     = {eng},
  number       = {3},
  pages        = {193--203},
  publisher    = {ARRAY(0x9010208)},
  series       = {IEEE/ACM Transactions on Audio, Speech, and Language Processing},
  title        = {Performance limits in subband beamforming},
  url          = {http://dx.doi.org/10.1109/TSA.2003.811543},
  volume       = {11},
  year         = {2003},
}