A Soft-Partitioned Frequency-Domain Adaptive Filter for Acoustic Echo Cancellation

Authors:

Enzner, G. ,  Vary, P.

Book Title:

Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

Address:

Hong Kong, China

Date:

Apr. 2003

Language:

English

Abstract

We present a soft--partitioned frequency--domain adaptive filter (SPFDAF) and compare it in the context of other LMS type acoustic echo cancelers. The SPFDAF uses a non--rectangular window to partition the model taps (impulse response) of an echo canceler. Our soft window can be approximated very efficiently in the DFT domain and still attenuates aliasing components of the DFT by 40 dB. This technique results in a very low computational complexity and maintains an excellent signal quality.

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