Adaptive echo cancellation method

Details Adaptive echo cancellation method Adaptive echo cancellation method

1998-04-09

2000-10-24

Woo, Stella

Telephonic communications

Subscriber line or transmission line interface

Network interface device

379406, H04M 100

Patent

active

061378828

ABSTRACT:
An adaptive echo cancellation method determines a long time average of an input signal and a short time average of the same signal, and prevents updating of an adaptive filter if the short time average falls below the long time average.

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Slock, Dirk T., "On the Convergence Behavior of the LMS and the Normalized LMS Algorithms", IEEE Transactions on Signal Processing, v41 n9, p2811-2825, 1993.

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