.\" @(#)echoCancel	1.1 11/24/92
.NA echo cancel
.SD
Echo canceller in telephone hybrid environment
.DE
.SV 1.1 "November 24, 1992"
.AL "Chih-Tsung Huang (ported from Gabriel"
.LO "~ptolemy/src/domains/cg96/demo/sim"
.LD
.pp
.Id "echo cancellation"
This system implements an echo canceller in a
telephone hybrid environment where leakage of the outgoing local signal
interferes with the incoming remote signal.
A tone is used as the local signal.
An FIR filter using the LMS algorithm for adaptation
is used to implement the echo canceller.
.ES













