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Currently the echo canceller reference signal is high-pass filtered to avoid the need of modeling the capture-side high-pass filter as part of the echo path. This can lead to the lowest frequency bins of the linear filter diverging as there is little low-frequency content available for training. Over time the filter can output an increasing amount of low-frequency power, which in turn affects the filter's ability to adapt properly. Disabling the high-pass filtering of the echo canceller reference solves this issue, resulting in improved filter convergence. Bug: webrtc:12265 Change-Id: Ic526a4b1b73e1808cfcd96a8cdee801b96a27671 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/208288 Reviewed-by: Per Åhgren <peah@webrtc.org> Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org> Cr-Commit-Position: refs/heads/master@{#33322}
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749efdfd1e3c3ace434b3673dac9ce4938534449 |