tree 3a4cbe35c9211755fc1336ed3999826f91c82caa
parent d89ce53dafa9ca7b33a721363fcadd37b9fef138
author Gustaf Ullberg <gustaf@webrtc.org> 1603273458 +0200
committer Commit Bot <commit-bot@chromium.org> 1603279195 +0000

AEC3: Prevent transparent mode from leaking low volume echo

This change makes the transparent mode classifier consider filter
convergence also for microphone signals with very low volume. This is
in order to prevent entering transparent mode when there is low, but
audible, echo.

Furthermore, the suppression gain during transparent mode is restored
to avoid leaks when the echo is too low to be reliably detected by
filter convergence.

Bug: webrtc:10232, chromium:1140452
Change-Id: Idd4f40c4aee7c20baa444afaa5ec604eb65bcfd0
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/189786
Reviewed-by: Per Åhgren <peah@webrtc.org>
Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32461}