H - Electricity – 04 – M
Patent
H - Electricity
04
M
344/14, 379/44,
H04M 3/18 (2006.01) H04M 9/08 (2006.01)
Patent
CA 2018836
Abstract of the Disclosure A method of training an echo canceller for cancelling an echo by subtracting an estimated echo signal generated in response to a receive-in signal and fed to a loudspeaker from an echo signal which is generated by a microphone in response to said receive-in signal, said method comprises the steps of generating, at the time of a first training, an initial echo signal and an initial estimated echo signal by feeding a training signal to the loudspeaker and the echo canceller; training the echo canceller in response to the initial echo signal and the initial estimated echo signal to obtain a response characteristic of the echo canceller to the echo signal; storing the initial echo signal and the initial estimated echo signal; and training, after the first training, the echo canceller by using the stored initial echo signal and the stored estimated echo signal.
Corporation Nec
G. Ronald Bell & Associates
LandOfFree
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