Patent Document ID: 5428604
Application ID: 08182941
Patent Flag: 1

Claim One:
1. A training method for an echo canceller having a microphone and a speaker comprising the steps of: (a) turning on a power supply to the voice conference system; (b) supplying a training signal to said echo canceller of said system only at said turning on of said power supply to said voice conference system; (c) training said echo canceller in response to said training signal; (d) holding results of said training as initial filter coefficients of an adaptive filter of said echo canceller after said training of said echo canceller is completed; (e) connecting a communication channel to a remote party to hold a voice conference with said voice conference system; (f) adapting said echo canceller at the start of said voice conference; (g) holding an adapted result of said adapting of said echo canceller upon completion of said voice conference; and (h) repeating said steps (e), (f) , (g).