Cross-talk cancellation

摘要

Cross-talk reduction and/or cancellation systems and methods are provided herein. In exemplary embodiments, a far-end acoustic signal is delayed by M samples. Additionally, a cross-talk estimate value for the delayed far-end acoustic signal may be subtracted from an input acoustic signal. The cross-talk estimate value is a scaled version of filter outputs generated by a finite impulse response filter that utilizes predetermined filter coefficients. The filter outputs are scaled using a dynamic gain value.

主权项

1. A method for cross-talk cancellation, the method comprising:
generating a cross-talk estimate signal using at least one hardware processor, the generating comprising:
delaying a far-end acoustic signal;filtering the delayed far-end acoustic signal to produce a filter output, the filtering based at least in part on fixed predetermined filter coefficients, the delayed far-end acoustic signal being in the time domain;adapting a gain variable for estimating cross-talk, the adapting the gain variable being a function of a cross-correlation and a magnitude of filter outputs, the cross-correlation being based at least in part on a near-end acoustic signal and the filter output; andapplying a gain to the filter output to produce the cross-talk estimate signal, the gain based at least in part on the adapted gain variable; and subtracting the cross-talk estimate signal from the near-end acoustic signal to generate a cleaned acoustic signal.