Echo cancellation apparatus, systems, and methods

摘要: An echo cancellation unit includes a model store to current from an adaptive filter when real-time error occurs. The is detected by monitoring convergence metric. In some embodiments, the metric return loss enhancement (ERLE). When occurs, saved, and reset such that it will begin converging origin. As new emerges in filter, compared saved at several time lags. If match found, emerging replaced with appropriate lag. result faster of than if were left converge on its own.