Cross correlation, bulk delay estimation, and echo cancellation
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United States of America Patent
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Issued Date -
Dec 16, 2004
app pub date -
Jun 10, 2003
filing date -
Jun 10, 2003
priority date (Note) -
Abandoned
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Abstract
Whitening is performed on at least a far-end communication signal to reduce a number of averages that must be calculated with respect to a cross-correlation process applied to the far-end signal and a near-end signal. The far-end signal is delivered to a near-end user device without having been whitened. The result of the cross-correlation process is used to estimate a bulk delay of one of the near-end and far-end signals relative to the other.
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