Multichannel acoustic echo reduction
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United States of America Patent
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Feb 26, 2013
Grant Date -
Dec 24, 2009
app pub date -
Jun 19, 2008
filing date -
Jun 19, 2008
priority date (Note) -
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Abstract
A multichannel acoustic echo reduction system is described herein. The system includes an acoustic echo canceller (AEC) component having a fixed filter for each respective combination of loudspeaker and microphone signals and having an adaptive filter for each microphone signal. For each microphone signal, the AEC component modifies the microphone signal to reduce contributions from the outputs of the loudspeakers based at least in part on the respective adaptive filter associated with the microphone signal and the set of fixed filters associated with the respective microphone signal.
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