Beamforming microphone arrays for speech enhancement

K. Farrell, R. J. Mammone, J. L. Flanagan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

17 Scopus citations


It is shown that beamforming with microphone arrays can be used to significantly reduce the effects of noise and reverberation. The Frost [1] algorithm and a new vectorized algorithm called the Row-Action Projection (RAP) method [2] are shown to yield approximately 11 dB of interference suppression. Computer simulations demonstrate the performance of the beamforming techniques for various locations of interference sources. The scenarios used for the computer simulations consist of a speech signal arriving normal to the array contaminated with speech interference from an unknown direction off the normal. The direction of the desired speaker is taken to be normal to the array for the simulations, however, it could be at any specified "look direction".

Original languageEnglish (US)
Title of host publicationICASSP 1992 - 1992 International Conference on Acoustics, Speech, and Signal Processing
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)0780305329
StatePublished - 1992
Event1992 International Conference on Acoustics, Speech, and Signal Processing, ICASSP 1992 - San Francisco, United States
Duration: Mar 23 1992Mar 26 1992

Publication series

NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ISSN (Print)1520-6149


Other1992 International Conference on Acoustics, Speech, and Signal Processing, ICASSP 1992
Country/TerritoryUnited States
CitySan Francisco

All Science Journal Classification (ASJC) codes

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering


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