Nonlinear acoustic echo cancellation based on Volterra filters

This paper describes a nonlinear acoustic echo cancellation algorithm, mainly focused on loudspeaker distortions. The proposed system is composed of two distinct modules organized in a cascaded structure: a nonlinear module based on polynomial Volterra filters models the loudspeaker, and a second mo...

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Bibliographic Details
Published in:IEEE transactions on speech and audio processing 2003-11, Vol.11 (6), p.672-683
Main Authors: Guerin, A., Faucon, G., Le Bouquin-Jeannes, R.
Format: Article
Language:English
Subjects:
Acoustic distortion
Acoustic signal processing
Acoustics
Algorithms
Applied sciences
Cancellation
Detection, estimation, filtering, equalization, prediction
Echo cancellers
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Impulse response
Information, signal and communications theory
Loudspeakers
Mathematical models
Maximum likelihood detection
Modules
Nonlinear acoustics
Nonlinear distortion
Nonlinear equations
Nonlinear filters
Nonlinearity
Physics
Polynomials
Signal and communications theory
Signal, noise
Sound filters
Stability
Telecommunications and information theory
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Summary:This paper describes a nonlinear acoustic echo cancellation algorithm, mainly focused on loudspeaker distortions. The proposed system is composed of two distinct modules organized in a cascaded structure: a nonlinear module based on polynomial Volterra filters models the loudspeaker, and a second module of standard linear filtering identifies the impulse response of the acoustic path. The tracking of the overall system model is achieved by a modified normalized-least mean square algorithm for which equations are derived. Stability conditions are given, and particular attention is placed on the transient behavior of cascaded filters. Finally, results of real data recorded with Alcatel GSM material are presented.
ISSN:1063-6676
2329-9290
1558-2353
2329-9304
DOI:10.1109/TSA.2003.818077