The following revision refers to this bug:
  https://webrtc.googlesource.com/src.git/+/895ae9a0cdff3f174c08d3f23b7ee4170cf34ffc

commit 895ae9a0cdff3f174c08d3f23b7ee4170cf34ffc
Author: Per Åhgren <peah@webrtc.org>
Date: Thu Mar 15 16:38:07 2018

Improving the speed of the delay estimator in AEC3

This CL significantly improves the response time
of the AEC3 delay estimator to audio buffer issues.

The CL adds ensures that the delay estimator
correlators reacts to buffer issues from the
zero state which is much faster than if it has already
achieved a state matching a previous alignment.

The CL has been extensively tested on offline
recordings.

Bug:  webrtc:9023 ,  chromium:822245 
Change-Id: Ic149b9429e592d4c3535eb8432582f435a1b4745
Reviewed-on: https://webrtc-review.googlesource.com/62081
Commit-Queue: Per Åhgren <peah@webrtc.org>
Reviewed-by: Ivo Creusen <ivoc@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22461}
[modify] https://crrev.com/895ae9a0cdff3f174c08d3f23b7ee4170cf34ffc/modules/audio_processing/aec3/echo_path_delay_estimator.cc
[modify] https://crrev.com/895ae9a0cdff3f174c08d3f23b7ee4170cf34ffc/modules/audio_processing/aec3/echo_path_delay_estimator.h
[modify] https://crrev.com/895ae9a0cdff3f174c08d3f23b7ee4170cf34ffc/modules/audio_processing/aec3/echo_path_delay_estimator_unittest.cc

I would like to ask for a merge of this into M66. The feature has been tested in Canary for 5 days and the stats looks good.

Furthermore, the feature is only active beneath an experimental flag so the merge is safe in the sense that the code can be turned off in case any issue would arise. 

This bug requires manual review: Less than 22 days to go before AppStore submit on M66
Please contact the milestone owner if you have questions.
Owners: cmasso@(Android), cmasso@(iOS), josafat@(ChromeOS), abdulsyed@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Approving merge for M66. Branch:3359

The following revision refers to this bug:
  https://webrtc.googlesource.com/src.git/+/43be8938a716347d9357b92a7122ccfa5c61caa2

commit 43be8938a716347d9357b92a7122ccfa5c61caa2
Author: Per Åhgren <peah@webrtc.org>
Date: Fri Mar 23 13:45:59 2018

Merge to M66: Improving the speed of the delay estimator in AEC3

This CL significantly improves the response time
of the AEC3 delay estimator to audio buffer issues.

The CL adds ensures that the delay estimator
correlators reacts to buffer issues from the
zero state which is much faster than if it has already
achieved a state matching a previous alignment.

The CL has been extensively tested on offline
recordings.

(cherry picked from commit 895ae9a0cdff3f174c08d3f23b7ee4170cf34ffc)

TBR: ivoc@webrtc.org,henrik.lundin@webrtc.org
Bug:  webrtc:9023 ,  chromium:822245 
Change-Id: Ic149b9429e592d4c3535eb8432582f435a1b4745
Reviewed-on: https://webrtc-review.googlesource.com/62081
Commit-Queue: Per Åhgren <peah@webrtc.org>
Reviewed-by: Ivo Creusen <ivoc@webrtc.org>
Cr-Original-Commit-Position: refs/heads/master@{#22461}
Reviewed-on: https://webrtc-review.googlesource.com/64407
Reviewed-by: Per Åhgren <peah@webrtc.org>
Cr-Commit-Position: refs/branch-heads/66@{#9}
Cr-Branched-From: 12c8110e8c717b7f0f87615d3b99caac2a69fa6c-refs/heads/master@{#22215}
[modify] https://crrev.com/43be8938a716347d9357b92a7122ccfa5c61caa2/modules/audio_processing/aec3/echo_path_delay_estimator.cc
[modify] https://crrev.com/43be8938a716347d9357b92a7122ccfa5c61caa2/modules/audio_processing/aec3/echo_path_delay_estimator.h
[modify] https://crrev.com/43be8938a716347d9357b92a7122ccfa5c61caa2/modules/audio_processing/aec3/echo_path_delay_estimator_unittest.cc

This issue has been approved for a merge. Please merge the fix to any appropriate branches as soon as possible!

If all merges have been completed, please remove any remaining Merge-Approved labels from this issue.

Thanks for your time! To disable nags, add the Disable-Nags label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot