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Real-Time DSP Implementation of a Subband Beamforming Algorithm for Dual Microphone Speech Enhancement
2007 (English)Conference paper, (Refereed) Published
Abstract [en]

A real-time Digital Signal Processor (DSP) based implementation of a subband beamforming algorithm and its evaluation for dual microphone speech enhancement is presented. The algorithm, a calibrated constrained beamformer, is described theoretically and a real-time structure is proposed, including an efficient approach for multichannel data transformation. Measurements show that the battery driven DSP implementation supports 20 h operation-time, with an improved Signal-to-Noise Ratio (SNR) of up to 14~dB in high-noise factory environment. Further, less than half the provided computational performance of the DSP is used by the proposed method, hence, processing of additional tasks may be included.

Place, publisher, year, edition, pages
New Orleans, LA, USA: IEEE , 2007.
Keyword [en]
Speech enhancement, Beamforming, DSP
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:bth-9138ISI: 000251608400089Local ID: oai:bth.se:forskinfo73171967AA9A96ABC125731F00332918ISBN: 1-4244-0921-7 (print)OAI: oai:DiVA.org:bth-9138DiVA: diva2:836916
Conference
ISCAS
Available from: 2012-09-18 Created: 2007-07-21 Last updated: 2015-06-30Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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Language
  • de-DE
  • en-GB
  • en-US
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Output format
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