Method and apparatus for retraining of echo cancellation
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United States of America Patent
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Feb 21, 2012
Grant Date -
Sep 25, 2008
app pub date -
Mar 22, 2007
filing date -
Mar 22, 2007
priority date (Note) -
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Abstract
A method of determining if an echo canceller comprised in a communication channel that is used to transmit at least one tonal signal and characterized by a model echo path of the channel, is acceptably adapted to cancel echoes in the channel, the method comprising: determining a performance measure how well the canceller cancels echoes of at least one test signal characterized by at least one frequency different from a frequency of the at least one tonal signal; and determining if the canceller is acceptably adapted responsive to the measure.
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