Patent ID: 8238575
Filing Date: 2012-08-07
Classification: G10L

Abstract:
1. A computer-implemented method for estimating signal coherence, comprising: detecting sound generated by a sound source, in particular, a speaker, by a first microphone to obtain a first microphone signal and by a second microphone to obtain a second microphone signal; filtering the first microphone signal by a first adaptive finite impulse response filter to obtain a first filtered signal; filtering the second microphone signal by a second adaptive finite impulse response filter, to obtain a second filtered signal; and estimating the coherence of the first filtered signal and the second filtered signal; wherein the first and the second microphone signals being filtered such that the difference between the acoustic transfer function for the transfer of the sound from the sound source to the first microphone and the transfer of the sound from the sound source to the second microphone is compensated in the first and second filtered signals.