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Blind Beamforming Using Parallel Single-channel Speech Enhancers

Sällberg, Benny; Grbic, Nedelko LU and Claesson, Ingvar LU (2006) ELMAR-2006 In Proceedings ELMAR 2006 p.123-126
Abstract
This paper presents an idea to extend a certain class of single channel speech enhancement algorithms to include the spatial domain. The resulting blind beamformer does not rely on a-priori knowledge of source and sensor positions and it enhances one or several speech sources based only on received data. The underlying principle in this approach is the fact that speech signals are short time stationary. Provided that the single channel speech enhancers attenuates unwanted sources and at the same time preserve the short time stationarity of speech signals, a summation of a small array of such single channel processors constitutes a coherent spatial speech enhancement. As opposed to traditional beamforming where the phase alteration is... (More)
This paper presents an idea to extend a certain class of single channel speech enhancement algorithms to include the spatial domain. The resulting blind beamformer does not rely on a-priori knowledge of source and sensor positions and it enhances one or several speech sources based only on received data. The underlying principle in this approach is the fact that speech signals are short time stationary. Provided that the single channel speech enhancers attenuates unwanted sources and at the same time preserve the short time stationarity of speech signals, a summation of a small array of such single channel processors constitutes a coherent spatial speech enhancement. As opposed to traditional beamforming where the phase alteration is pre-specified, the phase alteration of the proposed structure is controlled by the received data. The evaluation uses a two microphone array and indicates that the signal to interference ratio is increased for a variety of source positions using the proposed method with only an insignificant decrease in speech quality (Less)
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author
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Proceedings ELMAR 2006
pages
4 pages
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
ELMAR-2006
external identifiers
  • scopus:46149116615
ISBN
953-7044-03-3
DOI
10.1109/ELMAR.2006.329530
language
English
LU publication?
no
id
da61f9dd-138e-47c5-8a39-76f707acff3d
date added to LUP
2016-06-23 16:24:03
date last changed
2017-01-01 08:29:04
@inproceedings{da61f9dd-138e-47c5-8a39-76f707acff3d,
  abstract     = {This paper presents an idea to extend a certain class of single channel speech enhancement algorithms to include the spatial domain. The resulting blind beamformer does not rely on a-priori knowledge of source and sensor positions and it enhances one or several speech sources based only on received data. The underlying principle in this approach is the fact that speech signals are short time stationary. Provided that the single channel speech enhancers attenuates unwanted sources and at the same time preserve the short time stationarity of speech signals, a summation of a small array of such single channel processors constitutes a coherent spatial speech enhancement. As opposed to traditional beamforming where the phase alteration is pre-specified, the phase alteration of the proposed structure is controlled by the received data. The evaluation uses a two microphone array and indicates that the signal to interference ratio is increased for a variety of source positions using the proposed method with only an insignificant decrease in speech quality},
  author       = {Sällberg, Benny and Grbic, Nedelko and Claesson, Ingvar},
  booktitle    = {Proceedings ELMAR 2006},
  isbn         = {953-7044-03-3},
  language     = {eng},
  pages        = {123--126},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  title        = {Blind Beamforming Using Parallel Single-channel Speech Enhancers},
  url          = {http://dx.doi.org/10.1109/ELMAR.2006.329530 },
  year         = {2006},
}