tree f20dab58eeab0e770202aa71f6c9d02c064bca26
parent 3ab7a55f6e9c9d4d6efd9c37c5bc76a02596012a
author Alessio Bazzica <alessiob@webrtc.org> 1618409829 +0200
committer Commit Bot <commit-bot@chromium.org> 1618415801 +0000

AGC2 lightweight noise floor estimator

The current noise level estimator has a bug due to which the estimated
level decays to the lower bound in a few seconds when speech is observed.
Instead of fixing the current implementation, which is based on a
stationarity classifier, an alternative, lightweight, noise floor
estimator has been added and tuned for AGC2.

Tested on several AEC dumps including HW mute, music and fast talking.

Bug: webrtc:7494
Change-Id: Iae4cff9fc955a716878f830957e893cd5bc59446
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/214133
Commit-Queue: Alessio Bazzica <alessiob@webrtc.org>
Reviewed-by: Per Åhgren <peah@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33733}