Non-linear acoustic echo cancellation using empirical mode decomposition

Gudupudi, Leela K; Chatlani, Navin; Beaugeant, Christophe; Evans, Nicholas
ICASSP 2015, 40th IEEE International Conference on Acoustics, Speech and Signal Processing, 19-24 April 2015, Brisbane, Australia

The increasing popularity of miniature devices and loudspeakers has fuelled research in non-linear acoustic echo cancellation (NAEC). This paper reports a novel approach to NAEC based on empirical mode decomposition (EMD), a recently developed technique in non-linear and non-stationary signal analysis. EMD decomposes any signal into a finite number of time varying sub-band signals termed intrinsic mode functions (IMFs). The new approach to NAEC presented here incorporates this multi-resolution analysis with conventional power filtering to estimate non-linear echo in each IMF. Comparative experiments with a competitive baseline approach to NAEC based on pure power filtering show that the new EMD approach achieves greater non-linear echo reduction and faster convergence. 


DOI
Type:
Conference
City:
Brisbane
Date:
2015-04-19
Department:
Digital Security
Eurecom Ref:
4495
Copyright:
© 2015 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

PERMALINK : https://www.eurecom.fr/publication/4495