A Subband Space Constrained Beamformer incorporating Voice Activity Detection

Alan Davis, Siow-Yong Low, Sven Nordholm, Nedelko Grbic

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

17 Citations (SciVal)

Abstract

This paper introduces a new subband adaptive space constrained beamforming structure for use in hands-free speech enhancement applications. The scheme incorporates a space constrained source model and voice activity information through the integration of a voice activity detector (VAD). The VAD information is used to estimate noise covariance information during non-speech periods and to optimally estimate the source power spectral density (PSD), which is used to provide a spectrally optimized constraint on the source. The proposed structure is evaluated in a real car environment, yielding results which compare well to the optimal Wiener solution where full knowledge of the source is known.
Original languageEnglish
Title of host publicationProceedings. (ICASSP '05). IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005. (Volume:3 )
Place of PublicationPhiladelphia
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Pages65-68
Number of pages4
Volume3
ISBN (Print)0-7803-8874-7
DOIs
Publication statusPublished - 2005 Mar
Externally publishedYes
Event2005 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) - Philadelphia, PA, Philadelphia, PA, United States
Duration: 2005 Mar 182005 Mar 23

Conference

Conference2005 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
Abbreviated titleICASSP '05
Country/TerritoryUnited States
CityPhiladelphia, PA
Period2005/03/182005/03/23

Subject classification (UKÄ)

  • Signal Processing

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