Performance limits in subband beamforming
(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:
https://lup.lub.lu.se/record/850a9129-c2a1-4d7d-a6c9-0eda290bf57f
- author
- Nordholm, Sven ; Claesson, Ingvar LU and Grbic, Nedelko LU
- organization
- publishing date
- 2003
- 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}}, }