Echo canceller having Kalman filter for optimal adaptation
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United States of America Patent
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Nov 30, 1999
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N/A
app pub date -
Aug 8, 1997
filing date -
Feb 15, 1995
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Abstract
Kalman filtering is applied to obtain a fast convering, low complexity echo. An averaged diagonal Riccati equation allows optimal time varying adaptation gains K(t) to be precomputed, or computed online with a small number of scalar Riccati equations.
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