Graduate School and Research Center In communication systems

Seminar: Dual amplifier and loudspeaker compensation using fast convergent and cascaded approaches to non-linear acoustic echo cancellation.

Moctar Mossi Idrissa - MM PhD

Multimedia Communications

Date: March 23, 2012

This presentation focuses on cascaded approaches to non-linear acoustic echo cancellation (AEC) for mobile communications. The contributions are two-fold. They relate (i) to computationally efficient pre-processing and clipping compensation which aims to improve non-linear modelling and (ii) decorrelation filtering which aims to improve the tracking performance of a conventional linear AEC algorithm. While well-established in the literature the two modules require significant development in order that they function coherently in a cascaded approach. This paper presents new, adaptive parameterisation procedures for both modules and demonstrates significant improvements in terms of echo return loss enhancement when the two modules are combined.

Dual amplifier and loudspeaker compensation using fast convergent and cascaded approaches to non-linear acoustic echo cancellation.

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