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Adaptive beamformer with recursively updated quadratic constraints

Dam, H. Q.; Low, Siow-Yong; Nordholm, Sven and Grbic, Nedelko LU (2003) Information, Communications and Signal Processing, 2003 and Fourth Pacific Rim Conference on Multimedia In ICICS-PCM 2003. Proceedings of the 2003 Joint Conference of the Fourth International Conference on Information, Communications and Signal Processing and Fourth Pacific-Rim Conference on Multimedia 1. p.105-109
Abstract
A novel adaptive beamformer employing recursively updated soft constraints for acoustic speech enhancement is proposed. The beamformer operates in a subband structure to allow time-frequency operation for each channel. As such, the processing can be viewed as a combination of weighted spatial and temporal filters. The major benefit of this recursive soft constrained beamformer is that it allows the possibility of using the spectral information of the desired source to modify the soft constraint. This has clear benefits on the speech distortion of the source of interest. The novel adaptive beamformer involves continuous modification of the soft constraint by feeding back the spectral content of the estimated output speech signal.... (More)
A novel adaptive beamformer employing recursively updated soft constraints for acoustic speech enhancement is proposed. The beamformer operates in a subband structure to allow time-frequency operation for each channel. As such, the processing can be viewed as a combination of weighted spatial and temporal filters. The major benefit of this recursive soft constrained beamformer is that it allows the possibility of using the spectral information of the desired source to modify the soft constraint. This has clear benefits on the speech distortion of the source of interest. The novel adaptive beamformer involves continuous modification of the soft constraint by feeding back the spectral content of the estimated output speech signal. Evaluations on real car data show that the proposed algorithm significantly improves the speech quality with noise suppression levels up to 17 dB. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
ICICS-PCM 2003. Proceedings of the 2003 Joint Conference of the Fourth International Conference on Information, Communications and Signal Processing and Fourth Pacific-Rim Conference on Multimedia
volume
1
pages
5 pages
conference name
Information, Communications and Signal Processing, 2003 and Fourth Pacific Rim Conference on Multimedia
external identifiers
  • Scopus:84946211102
ISBN
0-7803-8185-8
DOI
10.1109/ICICS.2003.1292422
language
English
LU publication?
yes
id
285a289a-7141-44ec-8f5d-843b3edf5caa
date added to LUP
2016-06-23 15:45:29
date last changed
2016-10-13 05:10:48
@misc{285a289a-7141-44ec-8f5d-843b3edf5caa,
  abstract     = {A novel adaptive beamformer employing recursively updated soft constraints for acoustic speech enhancement is proposed. The beamformer operates in a subband structure to allow time-frequency operation for each channel. As such, the processing can be viewed as a combination of weighted spatial and temporal filters. The major benefit of this recursive soft constrained beamformer is that it allows the possibility of using the spectral information of the desired source to modify the soft constraint. This has clear benefits on the speech distortion of the source of interest. The novel adaptive beamformer involves continuous modification of the soft constraint by feeding back the spectral content of the estimated output speech signal. Evaluations on real car data show that the proposed algorithm significantly improves the speech quality with noise suppression levels up to 17 dB.},
  author       = {Dam, H. Q. and Low, Siow-Yong and Nordholm, Sven and Grbic, Nedelko},
  isbn         = {0-7803-8185-8},
  language     = {eng},
  pages        = {105--109},
  series       = {ICICS-PCM 2003. Proceedings of the 2003 Joint Conference of the Fourth International Conference on Information, Communications and Signal Processing and Fourth Pacific-Rim Conference on Multimedia },
  title        = {Adaptive beamformer with recursively updated quadratic constraints},
  url          = {http://dx.doi.org/10.1109/ICICS.2003.1292422},
  volume       = {1},
  year         = {2003},
}