A CENTRALIZED ACOUSTIC ECHO CANCELLER BASED ON PERCEPTUAL PROPERTIES

Héla Daassi-Gnaba; Pascal Scalart; Claude Marro

inria-00482662, version 1

A CENTRALIZED ACOUSTIC ECHO CANCELLER BASED ON PERCEPTUAL PROPERTIES

Héla Daassi-Gnaba^a^, 1, Pascal Scalart ()^b^, 2, Claude Marro^a^, 1

XIII European Signal Processing Conference (EUSIPCO'05) (2005)

Résumé : The use of a centralized acoustic echo canceller in the mobile switching center of a GSM network allows the operator to enhance the audio quality before transmission to all subscribers. However, the main problem is the impact of the speech coder/decoder nonlinearities along the echo path. In this paper, we propose a combined acoustic echo canceller/post-ﬁlter based on perceptual properties to reduce the coding noise. Theoretical and experimental comparisons against classical solutions are given to evaluate the performance of the proposed approach in a centralized context of echo cancellation.

a – France Télécom
b – Université de Rennes 1
1 : Orange Labs - Lannion
France Télécom
2 : R2D2 (INRIA - IRISA)
CNRS : UMR6074 – INRIA – Institut National des Sciences Appliquées (INSA) - Rennes – Ecole Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT) – Université de Rennes 1

inria-00482662, version 1
http://hal.inria.fr/inria-00482662
oai:hal.inria.fr:inria-00482662
Contributeur : Pascal Scalart <>
Soumis le : Mardi 11 Mai 2010, 10:38:54
Dernière modification le : Lundi 17 Mai 2010, 13:55:16

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