Multi-channel acoustic echo cancellation method and multi-channel acoustic echo canceller

摘要

(57) in order to cancel the echo of the speech signal channels SUMMARY plurality, for each channel, and generates a composite signal having the spectral characteristics of white noise, the method, frequency shielding in the adjacent plurality of frequency bands The computed using auditory characteristic threshold in each frequency channel, the value of the blocking threshold for the relevant level of the combined signal, with the auxiliary signal, is associated with the speaker of the channel with which it is associated subtracts the result signal is added to each microphone channel the output signal of the adaptive filter is added to the signal, is supplied to the adaptive filter signal results, related, received by the microphone of this channel, to derive an estimation error, the estimated and is characterized in that based on the error, the adaptive filter coefficients associated with the channel is corrected.