Detecting acoustic echoes using microphone arrays

Details Detecting acoustic echoes using microphone arrays Detecting acoustic echoes using microphone arrays

H - Electricity

04

R

H04R 3/00 (2006.01) H04R 1/32 (2006.01)

Patent

CA 2485728

A method is provided for discriminating between the case of a single talker with an acoustic reflection and the case of two talkers, regardless of their power levels. The method is implemented in real time by performing a cross-correlation between pairs of average power signals originating from pairs of beamformers. A detection decision is then made based on the value of the cross correlation and its lag.

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