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Background Speech Cancellation using a Generalized Subspace Speech Enhancement Method

Authors:
Radu Mihnea Udrea
Constantin Paleologu
Silviu Ciochina

Keywords: speech enhancement, colored noise, subspace

Abstract:
This paper presents a speech enhancement method for reducing undesired babble noise, or background speech, that affects the desired speech, using a generalized subspace approach. The subspace decomposition is obtained with a nonunitary transform based on diagonalization of the clean speech and background distortion covariance matrices. The clean signal is estimating using an optimal subspace estimator that nulls the signal components in the distortion signal subspace and keeps the components in the signal subspace. Objective and subjective measures show a better suppression of background speech that other subspace-based methods that were proposed for white noise.

Pages: 27 to 30

Copyright: Copyright (c) IARIA, 2011

Publication date: June 19, 2011

Published in: conference

ISSN: 2308-4529

ISBN: 978-1-61208-139-7

Location: Luxembourg City, Luxembourg

Dates: from June 19, 2011 to June 24, 2011