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A Calibrated Subband Beamforming Algorithm for Speech Enhancement

Yermeche, Zohra; Garcia, Pilar Márquez; Grbic, Nedelko LU and Claesson, Ingvar LU (2002) 2002 Sensor Array and Multichannel Signal Processing Workshop In Sensor Array and Multichannel Signal Processing Workshop Proceedings, 2002 p.485-489
Abstract
The paper proposes a new calibrated adaptive frequency domain beamformer for speech enhancement. The beamformer is based on the principle of a soft constraint formed from calibration data, rather than precalculated from free-field assumptions. The benefit is that the real room acoustical properties are taken into account. The proposed algorithm continuously estimates the spatial information for each frequency band, based on weighting of the received data. The update of the beamforming weights is done recursively where the initial precalculated correlation estimates of the speech constitute a soft constraint. The soft constraint secures the spatial-temporal passage of the desired source signal, without the need of any speech detection. The... (More)
The paper proposes a new calibrated adaptive frequency domain beamformer for speech enhancement. The beamformer is based on the principle of a soft constraint formed from calibration data, rather than precalculated from free-field assumptions. The benefit is that the real room acoustical properties are taken into account. The proposed algorithm continuously estimates the spatial information for each frequency band, based on weighting of the received data. The update of the beamforming weights is done recursively where the initial precalculated correlation estimates of the speech constitute a soft constraint. The soft constraint secures the spatial-temporal passage of the desired source signal, without the need of any speech detection. The performance is evaluated in real world scenarios, in both car and restaurant environments. Interference and noise suppression of more than 15 dB is accomplished, while very small distortion is measured for the source signal. (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Sensor Array and Multichannel Signal Processing Workshop Proceedings, 2002
pages
5 pages
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
2002 Sensor Array and Multichannel Signal Processing Workshop
external identifiers
  • Scopus:34548813155
ISBN
0-7803-7551-3
DOI
10.1109/SAM.2002.1191087
language
English
LU publication?
no
id
ff04326e-c5ee-4fc5-9867-96cfc6793c61
date added to LUP
2016-06-23 15:30:56
date last changed
2016-10-13 05:10:47
@misc{ff04326e-c5ee-4fc5-9867-96cfc6793c61,
  abstract     = {The paper proposes a new calibrated adaptive frequency domain beamformer for speech enhancement. The beamformer is based on the principle of a soft constraint formed from calibration data, rather than precalculated from free-field assumptions. The benefit is that the real room acoustical properties are taken into account. The proposed algorithm continuously estimates the spatial information for each frequency band, based on weighting of the received data. The update of the beamforming weights is done recursively where the initial precalculated correlation estimates of the speech constitute a soft constraint. The soft constraint secures the spatial-temporal passage of the desired source signal, without the need of any speech detection. The performance is evaluated in real world scenarios, in both car and restaurant environments. Interference and noise suppression of more than 15 dB is accomplished, while very small distortion is measured for the source signal.},
  author       = {Yermeche, Zohra and Garcia, Pilar Márquez and Grbic, Nedelko and Claesson, Ingvar},
  isbn         = {0-7803-7551-3},
  language     = {eng},
  pages        = {485--489},
  publisher    = {ARRAY(0x8ef0d00)},
  series       = {Sensor Array and Multichannel Signal Processing Workshop Proceedings, 2002},
  title        = {A Calibrated Subband Beamforming Algorithm for Speech Enhancement},
  url          = {http://dx.doi.org/10.1109/SAM.2002.1191087 },
  year         = {2002},
}