| 摘要 |
A method and a system for implementing echo cancellation. The method ( 300, 400 ) can include, on a first communication device ( 200 ), generating an acoustic signal ( 130 ) corresponding to an audio signal ( 110 ) received from a second communication device. Responsive to receiving a portion of the acoustic signal and detecting it is clipped, filter coefficient adaptation in an echo cancellation system ( 205 ) can be neutralized. For example, filter coefficients can be maintained at previous values, a control signal ( 230 ) that indicates zero error can be provided to an adaptive algorithm ( 235 ) that generates filter coefficients ( 225 ), a control signal can be provided that indicates to the adaptive algorithm to halt automatic updating of the filter coefficients that are generated, or a control signal can be provided that indicates to an adaptive filter ( 245 ) to halt automatic updating of the filter coefficients that are processed.
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