Real time Implementation of a Blind Beamformer for Subband Speech Enhancement using Kurtosis Maximization

Benny Sällberg, Mikael Swartling, Nedelko Grbic, Ingvar Claesson

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

This paper presents a real time implementation of a blind beamformer for subband speech enhancement. The beamformer adaptively
maximizes the statistical kurtosis measure of the beamformer’s
output signal. Speech carries high kurtosis and noise
often exhibit lower kurtosis. Hence, maximization of the output
signal’s kurtosis enhances speech, in general. The implementation
is carried out on a novel framework for real time audio processing
in MATLAB and uses low latency ASIO sound cards.
The implementation is evaluated using recorded signals and the
speech is enhanced approximately 10 dB by the proposed approach
with perceptually low speech distortion.
Original languageEnglish
Title of host publicationInternational Workshop on Acoustic Echo and Noise Control
Place of PublicationParis
Pages1-4
Number of pages4
Publication statusPublished - 2006 Sep
Event International Workshop on Acoustic Echo and Noise Control (IWAENC 2003) - Télécom, Paris, France
Duration: 2006 Sep 122006 Sep 14
http://www.iwaenc.org/proceedings/2006/en/program.html

Workshop

Workshop International Workshop on Acoustic Echo and Noise Control (IWAENC 2003)
Country/TerritoryFrance
CityParis
Period2006/09/122006/09/14
Internet address

Subject classification (UKÄ)

  • Signal Processing

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