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Microphone array speech enhancement based on signal subspace

Qiu Zuo

Abstract

The reason that the signal subspace approach can improve SNR is analyzed.Application of signal subspace to microphone array speech enhancement and the method of subspace composition are discussed.Meanwhile, the single microphone speech enhancement approach is improved to microphone array speech enhancement approach,and combined with beamforming algorithm. Exporiment results show that the method significantly improves SNR in noisy environment.

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Available abstract

Key concepts: Subspace topology, Speech enhancement, Beamforming, Microphone array, Microphone, Noise-canceling microphone, Speech recognition, Signal subspace