The code that attenuates narrow banded echo peaks in low frequencies is removed as it affects transparency negatively. Bug: webrtc:9192,chromium:836729 Change-Id: Ib90ce6a3db0a75e8d69bdca432e1f8f8bfbbd988 Reviewed-on: https://webrtc-review.googlesource.com/72380 Reviewed-by: Per Åhgren <peah@webrtc.org> Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23022}