Method of performing convergence in a, least mean square, adaptive filter, echo canceller
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United States of America Patent
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Mar 15, 1994
Grant Date -
N/A
app pub date -
Apr 13, 1992
filing date -
Apr 13, 1992
priority date (Note) -
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Abstract
A method is described of decreasing convergence time in an adaptive echo canceller. The method includes the step of locating a primary echo within a filter vector based upon relative tap values within the filter vector. The filter vector is then narrowed, based upon the located taps. An estimated error is determined based, in part, upon the narrowed filter vector. An updated filter vector is produced based, in part, upon the estimated error.
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