Post-processing gains for signal enhancement

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United States of America Patent

PATENT NO 12112768
APP PUB NO 20230419983A1
SERIAL NO

18344782

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Abstract

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A method, an apparatus, and logic to post-process raw gains determined by input processing to generate post-processed gains, comprising using one or both of delta gain smoothing and decision-directed gain smoothing. The delta gain smoothing comprises applying a smoothing filter to the raw gain with a smoothing factor that depends on the gain delta: the absolute value of the difference between the raw gain for the current frame and the post-processed gain for a previous frame. The decision-directed gain smoothing comprises converting the raw gain to a signal-to-noise ratio, applying a smoothing filter with a smoothing factor to the signal-to-noise ratio to calculate a smoothed signal-to-noise ratio, and converting the smoothed signal-to-noise ratio to determine the second smoothed gain, with smoothing factor possibly dependent on the gain delta.

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Patent Owner(s)

Patent OwnerAddress
DOLBY LABORATORIES LICENSING CORPORATION1275 MARKET STREET SAN FRANCISCO CA 94103

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dickins, Glenn N Como, AU 118 1345
Sun, Xuejing Beijing, CN 80 1358

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