A comparison between alternative beamforming strate- gies for interference cancelation in noisy and reverberant environment

Shmulik Markovich, Sharon Gannot, Israel Cohen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In speech communication systems the received microphone signals are often degraded by competing speakers, noise signals and room reverberation. Microphone arrays are commonly utilized to enhance the desired speech signal. In this paper two important design criteria, namely the minimum variance distortionless response (MVDR) and the linearly constrained minimum variance (LCMV) beamformers, are explored. These structures differ in their treatment of the interference sources. Experimental results using simulated reverberant enclosure are used for comparing the two strategies. It is shown that the LCMV beamformer outperforms the MVDR beamformer provided that the acoustic environment is time-invariant.
Original languageAmerican English
Title of host publicationElectrical and Electronics Engineers in Israel, 2008. IEEEI 2008. IEEE 25th Convention of
PublisherIEEE
StatePublished - 2008

Bibliographical note

Place of conference:Eilat

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