Excitation-dependent stepsize control of adaptive Volterra filters for acoustic echo cancellation

Conference contribution
(Conference Contribution)


Publication Details

Author(s): Contan C, Zeller M, Kellermann W, Topa M
Publication year: 2012
Pages range: 604-608
ISBN: 9781467310680
Language: English


Abstract


This paper proposes a new updating technique for adaptive Volterra kernels employed as nonlinear models for the identification of unknown feedback paths in acoustic nonlinear echo cancellation tasks. Considering that nonlinear distortions are mainly introduced for high input levels, the effective step size is shaped according to the instantaneous envelope of the excitation signal. The loudspeaker-enclosure-microphone setup is modeled using measured linear and quadratic Volterra kernels. The efficiency of the proposed method is compared to the one of the second-order Volterra filter that uses only the Normalized Least-Mean-Square algorithm for kernel adaptation in terms of Echo Return Loss Enhancement. Simulations for different input signals show a superior behavior of the new approach in terms of convergence speed, considering the same steady-state error. © 2012 EURASIP.


FAU Authors / FAU Editors

Kellermann, Walter Prof. Dr.-Ing.
Professur für Nachrichtentechnik
Zeller, Marcus
Lehrstuhl für Multimediakommunikation und Signalverarbeitung


External institutions
Technical University Cluj-Napoca / Universitatea Tehnica din Cluj-Napoca


How to cite

APA:
Contan, C., Zeller, M., Kellermann, W., & Topa, M. (2012). Excitation-dependent stepsize control of adaptive Volterra filters for acoustic echo cancellation. (pp. 604-608). Bucharest, RO.

MLA:
Contan, Cristian, et al. "Excitation-dependent stepsize control of adaptive Volterra filters for acoustic echo cancellation." Proceedings of the 20th European Signal Processing Conference, EUSIPCO 2012, Bucharest 2012. 604-608.

BibTeX: 

Last updated on 2018-17-10 at 09:23