Convergence improvement for oversampled subband adaptive...

Details Convergence improvement for oversampled subband adaptive... Convergence improvement for oversampled subband adaptive...

H - Electricity

04

B

H04B 3/21 (2006.01) H03H 21/00 (2006.01) H04B 3/23 (2006.01)

Patent

CA 2410749

A method and system for improving the convergence properties of the adaptive filters is provided. The system includes an oversampled WOLA and a circuit for improving the convergence rate. The circuit may implement whitening by spectral emphasis, whitening by additive noise, whitening by decimation or affine projection algorithm. The system is applicable to echo cancellation. For echo cancellation, adaptive step size control, adaptation process control using Double-Talk detector may be implemented. The system may further implement a non-adaptive processing for reducing uncorrelated noise and/or cross-talk resistant adaptive noise cancellation.

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