Dereverberation of multi-channel audio streams

Details Dereverberation of multi-channel audio streams Dereverberation of multi-channel audio streams

2005-06-24

2010-11-30

Mei, Xu (Department: 2614)

Electrical audio signal processing systems and devices

Dereverberators

C381S094300, C381S094100, C379S406140

Reexamination Certificate

active

07844059

ABSTRACT:
A system and process for dereverberation of multi-channel audio streams is presented which uses reverberation suppression techniques. In general, the present system and process builds a frequency dependent model of the reverberation decay and uses spectral subtraction-based reverberation reduction to achieve the aforementioned suppression. This dereverberation system and process can be used to improve automatic speech recognition (ASR) results with minimal CPU overhead.

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