Adaptive differential pulse code modulation system and method utilizing whitening filter for updating of predictor coefficients

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United States of America Patent

APP PUB NO 20010040927A1
SERIAL NO

09784688

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Abstract

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An improved technique for processing digital audio signals is provided wherein adaptation of predictor coefficients in an ADPCM environment is caused to converge in a rapid and computationally efficient manner. The technique employs a whitening filter to generate a filtered reconstructed signal which is utilized to update, or adapt, the prediction coefficients of a pole-based predictor.

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Patent Owner(s)

Patent OwnerAddress
POLYCOM INC2584 JUNCTION AVENUE SAN JOSE CA 95134

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chu, Peter L Lexington, MA 64 1682

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