An echo canceller circuit for use in an echo canceller system is set forth. The echo canceller circuit comprises a first digital filter having non-adaptive tap coefficients to simulate an echo response occurring during a call. A second digital filter having adaptive tap coefficients to simulate an echo...http://www.google.fr/patents/US6181793?utm_source=gb-gplus-shareBrevet US6181793 - Echo canceller employing dual-H architecture having improved coefficient transfer
Echo canceller employing dual-H architecture having improved coefficient ...
