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Real-Time DSP Implementation of a Subband Beamforming Algorithm for Dual Microphone Speech Enhancement

In English

Författare

  • Zohra Yermeche
  • Benny Sällberg
  • Nedelko Grbic
  • Ingvar Claesson

Summary, in English

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.

Publiceringsår

2007-05

Språk

Engelska

Sidor

353-356

Publikation/Tidskrift/Serie

IEEE International Symposium on Circuits and Systems

Dokumenttyp

Konferensbidrag

Förlag

IEEE - Institute of Electrical and Electronics Engineers Inc.

Ämne

  • Signal Processing

Conference name

2007 IEEE International Symposium on Circuits and Systems, ISCAS 2007

Conference date

2007-05-27 - 2007-05-30

Conference place

New Orleans, LA, United States

Status

Published

ISBN/ISSN/Övrigt

  • ISBN: 1-4244-0920-9
  • ISBN: 1-4244-0921-7