A new monaural method for the suppression of late room reverberation from speech signals, based on spectral subtraction, is presented. The problem of reverberation suppression differs from classical speech de-noising in that the -reverberation noise- is non-stationary. In this paper, the use of a novel estimator of the non-stationary reverberation noise power spectrum, based on a statistical model of late reverberation, is presented. Tests on real reverberated signals show that the proposed system yields significant reduction of reverberation together with little signal distortion.

Authors: Lebart, K.; Boucher, J. M.; Denbigh, P. N.
Affiliation: University Sussex, Brighton, England
AES Convention: 105 (September 1998) Paper Number: 4764
Publication Date: September 1, 1998
Subject: Digital Signal Processing for Audio

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