tree 0bc4d3cb4a848584c4ace5761c28a2076340caa4
parent 01738c63aa9480b8c4e3fcf3feb58ae9b9f94c6f
author Gustaf Ullberg <gustaf@webrtc.org> 1555341337 +0200
committer Commit Bot <commit-bot@chromium.org> 1555344521 +0000

AEC3: Avoid using filter output in suppression gain computation in non-linear mode

As non-linear mode uses a suppressed version of y (not e) as output, this change
uses Y2, rather than E2, as nearend spectrum when computing the suppression gains.
E2 is still used in linear mode.

This change also affects how the minimum suppression gains are calculated. The
minimum gain is now min_echo_power / weighted_residual_echo.

Bug: webrtc:10550
Change-Id: I2904c5a09dd64b06bf25eb5a37c18dab50297794
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/133023
Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org>
Reviewed-by: Per Åhgren <peah@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27629}