METHOD AND APPARATUS FOR SETTING A STEP SIZE FOR AN ADAPTIVE FILTER COEFFICIENT OF AN ECHO CANCELLER
The step sizes for tap positions of an adaptive filter ( 124 ) in an echo canceller ( 125 ) for canceling an echo signal are individually selected based upon a profile of the echo environment. A training signal ( 112 ) is injected into the echo canceller and to the echo path during a training interv...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The step sizes for tap positions of an adaptive filter (
124
) in an echo canceller (
125
) for canceling an echo signal are individually selected based upon a profile of the echo environment. A training signal (
112
) is injected into the echo canceller and to the echo path during a training interval, or period. The adaptive filter profiles the echo path during the training interval. Respective step sizes [k] for the tap positions are generated as a function of the echo profile so generated. |
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