A two-channel reverberation suppression scheme based on blind signal separation and Wiener filtering

Conference contribution
(Conference Contribution)


Publication Details

Author(s): Schwarz A, Reindl K, Kellermann W
Publication year: 2012
Pages range: 113-116
ISBN: 978-1-4673-0046-9
Language: English


Abstract


In this paper, we apply a blind signal extraction scheme for two microphones to the problem of dereverberation. The system consists of a blocking matrix that cancels the target signal as well as reverberated components up to a certain time lag, thus obtaining a reference not only for noise and interference, but also for late reverberation, which can then be suppressed with a Wiener filter, while leaving early reverberation components largely intact. The performance is assessed in terms of recognition rate of an automatic speech recognizer trained on clean speech, using sentences from the GRID corpus convolved with measured room impulse responses. We show that the system, although primarily developed for noise and interference suppression in low SNR conditions, can significantly suppress reverberation and thereby improve recognition results. © 2012 IEEE.


FAU Authors / FAU Editors

Kellermann, Walter Prof. Dr.-Ing.
Professur für Nachrichtentechnik
Reindl, Klaus
Professur für Nachrichtentechnik
Schwarz, Andreas
Professur für Nachrichtentechnik


How to cite

APA:
Schwarz, A., Reindl, K., & Kellermann, W. (2012). A two-channel reverberation suppression scheme based on blind signal separation and Wiener filtering. (pp. 113-116). Kyoto, JP.

MLA:
Schwarz, Andreas, Klaus Reindl, and Walter Kellermann. "A two-channel reverberation suppression scheme based on blind signal separation and Wiener filtering." Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Kyoto 2012. 113-116.

BibTeX: 

Last updated on 2018-10-12 at 20:50