Acoustic echo cancellation
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United States of America Patent
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Feb 9, 2010
Grant Date -
N/A
app pub date -
May 18, 2000
filing date -
May 25, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A multiple channel steered spatialized signal is generated from a signal input modified according to respective spatialization gain functions to generate a plurality of audio channels. An echo cancellation signal is applied to a return path using a combined spatialization and echo path estimate. The estimate is derived from the gain functions applied to the respective channels. When the gain functions applied in the respective channels are changed, for instance to represent a different apparent position of the sound source, a new estimate of the echo paths is generated, based on a previous estimate of the echo path and on the new gain functions.
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