Article

DTD-free nonlinear acoustic echo cancellation based on independent component analysis

Dept. of Electron. Eng., Sogang Univ., Seoul, South Korea
Electronics Letters (impact factor: 0.96). 07/2010; DOI:10.1049/el.2010.0848 pp.866 - 868
Source: IEEE Xplore

ABSTRACT An adaptive acoustic echo cancellation method based on independent component analysis, which can remove nonlinear echo components, is presented. Since this method takes into account the independence between a far-end signal and the echo-cancelled output to cancel acoustic echoes which are independent of near-end signals, it can continue to update AEC parameters even in double-talk situations, thereby improving the cancellation performance. Experiments show that the proposed method provides better performance than the conventional least-mean-square methods for both linear and nonlinear AEC systems without requiring separate double-talk detection (DTD).

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Keywords

acoustic echoes
 
adaptive acoustic echo cancellation method
 
AEC parameters
 
conventional least-mean-square methods
 
double-talk situations
 
DTD
 
echo-cancelled output
 
nonlinear AEC systems
 
nonlinear echo components
 
proposed method
 
separate double-talk detection
 

Y J Park