Novel schemes for nonlinear acoustic echo cancellation based on filter combinations

Azpicueta-Ruiz LA, Zeller M, Arenas-García J, Kellermann W (2009)


Publication Language: English

Publication Status: Published

Publication Type: Conference contribution, Conference Contribution

Publication year: 2009

Pages Range: 193-196

Article Number: 4959553

Event location: Taipei TW

ISBN: 978-1-4244-2353-8

DOI: 10.1109/ICASSP.2009.4959553

Abstract

Nonlinear acoustic echo cancellers (NLAEC) are becoming increasingly important in hands-free applications. However, in some situations, an NLAEC is inferior to a linear AEC, especially when the channel generates a negligible (or no) nonlinear echo. In general, the ratio of the linear to nonlinear echo signal power is unknown a priori, and will vary over time, thus making it difficult to know if an NLAEC would improve or degrade the cancellation. In this paper, we present two novel solutions to this problem based on the adaptive combination of linear and nonlinear echo cancellers. Both solutions perform efficiently regardless of the level of nonlinear echo. The benefits and robustness of both schemes are illustrated by experiments using Laplacian colored noise and speech input signals. ©2009 IEEE.

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APA:

Azpicueta-Ruiz, L.A., Zeller, M., Arenas-García, J., & Kellermann, W. (2009). Novel schemes for nonlinear acoustic echo cancellation based on filter combinations. In Proceedings of the 2009 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2009 (pp. 193-196). Taipei, TW.

MLA:

Azpicueta-Ruiz, Luis A., et al. "Novel schemes for nonlinear acoustic echo cancellation based on filter combinations." Proceedings of the 2009 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2009, Taipei 2009. 193-196.

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