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Robust microphone array using subband adaptive beamformer
Responsible organisation
2002 (English)Conference paper, Published paper (Refereed) Published
Abstract [en]

This paper presents a new robust microphone array to enhance speech signal under the influence of noise and jammer(s). The proposed structure comprises of a soft con-strained subband beamformer, a blocking system and a non-coherent processing technique. The soft constrained beamformer enhances the desired speech signal in a specified region by suppressing all side-lobes. This enhanced signal is then used as a reference signal by the blocking system to estimate the interference spectrum. Finally, the beamformer’s output is spectral subtracted using the estimated interference spectrum. Simulations in a real office environment show higher interference suppression level compared to those obtained using the soft constrained beamformer only. Most importantly, this is achieved with negligible expense on target signal distortion.

Place, publisher, year, edition, pages
Singapore: IEEE , 2002.
Keyword [en]
Soft constraint, Beamforming, Spectral subtraction
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:bth-9867Local ID: oai:bth.se:forskinfo7C6FA7956CDBD628C1256C6F002DB634ISBN: 0-7803-7510-6 (print)OAI: oai:DiVA.org:bth-9867DiVA: diva2:837837
Conference
8th IEEE International Conference on Communications Systems (ICCS 2002)
Available from: 2012-09-18 Created: 2002-11-12 Last updated: 2015-06-30Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf