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Convention Paper

Joint Noise and Reverberation Suppression for Speech Applications

Authors: Kokkinis, Elias K.; Tsilfidis, Alexandros; Georganti, Eleftheria; Mourjopoulos, John

AES Convention 130 · Paper 8431 · May 2011

Abstract

An algorithm for joint suppression of noise and reverberation from speech signals is presented. The method requires a handclap recording that precedes speech activity. A running kurtosis technique is applied in order to extract an estimation of the late reflections of the room impulse response from the clap while a moving average filter is employed for the noise estimation. Moreover, the excitation signal derived from the Linear Prediction (LP) analysis of the noisy speech along with the estimated power spectrum of the late reflections are used to suppress late reverberation through spectral subtraction while a Wiener filter compensates for the ambient noise. A gain magnitude regularization step is also implemented to reduce overestimation errors. Objective and subjective results show that the proposed method achieves significant speech enhancement in all tested cases.

Details

Published in
AES Convention 130
AES Convention
130
Paper number
8431
Publication date
May 6, 2011
Session subject
Source Enhancement
Affiliation
Audio and Acoustic Technology Group, University of Patras, Patras, Greece (See document for exact affiliation information.)
Type
Convention Paper