Two-stage digital automatic gain control

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United States of America

PATENT NO 11258416
SERIAL NO

17187773

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Abstract

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Disclosed are systems and methods for automatic control of gain in audio and video conferencing applications to maintain a predetermined and stable audio level. In one embodiment, a first stage applies a first stage gain based on a long-term estimate of signal level, while a second stage gain, based on a short-term estimate of signal level assists the first stage gain to achieve a target level. Some embodiments of long-term level estimation utilize statistical analysis of a buffer to validate or arrive at a more accurate long-term signal level estimate.

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Patent Owner(s)

  • ZOOM VIDEO COMMUNICATIONS, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Jianglong Hangzhou, CN 9 2
Rao, Yu Sunnyvale, US 13 13
Wang, Yangzhong Suzhou, CN 6 8

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