This filter preprocess the time domain representation of the adaptive linear filter to avoid low-frequency components causing issues in the filter analysis. Bug: webrtc:9343, chromium:848231 Change-Id: I40494959f1b76242a7c9f2a2fc85c2ad4af9e164 Reviewed-on: https://webrtc-review.googlesource.com/79142 Commit-Queue: Per Åhgren <peah@webrtc.org> Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23536}