Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

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

Request Permissions
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)

Request Permissions
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
; and
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
2022-01-30 04:42:34
@article{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    = {{Piscataway, NJ : Institute of Electrical and Electronics Engineers}},
  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}},
  doi          = {{10.1109/TSA.2003.811543}},
  volume       = {{11}},
  year         = {{2003}},
}