6 Commits

Author SHA1 Message Date
Per Åhgren
524e878121 AEC3: Add state-specific suppressor behaviors
This CL allows selecting an echo suppressor behavior which is specific
for whether the nearend is dominant, or the echo is dominant.

The changes in this CL are bitexact.

Bug: webrtc:9660
Change-Id: Ie32e65efe47e692de6d6a22a7ad3b469d745fd6b
Reviewed-on: https://webrtc-review.googlesource.com/95725
Commit-Queue: Per Åhgren <peah@webrtc.org>
Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24434}
2018-08-24 21:43:36 +00:00
Per Åhgren
398689f581 AEC3: Adding the option for applying a fixed delay to the capture signal
This CL adds functionality for applying an optional fixed delay in AEC3
to the capture signal

Bug: webrtc:9647
Change-Id: Id3b3f896bcf203e6611298dc804c3c80da9f1883
Reviewed-on: https://webrtc-review.googlesource.com/95142
Commit-Queue: Per Åhgren <peah@webrtc.org>
Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24399}
2018-08-23 10:05:07 +00:00
Jesús de Vicente Peña
dd09287514 AEC3: Gain limiter: Improving the behavior of the gain limiter.
In this work, we change the behavior of the gain limiter so it also looks at the energy
 on farend around the default delay for deciding the suppression gain
that should be applied at the initial portion of the call.

Bug: webrtc:9311,chromium:846724
Change-Id: I0b777cedbbd7fd689e72070f72237296ce120d3c
Reviewed-on: https://webrtc-review.googlesource.com/78960
Reviewed-by: Per Åhgren <peah@webrtc.org>
Commit-Queue: Jesus de Vicente Pena <devicentepena@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23400}
2018-05-25 15:49:38 +00:00
Per Åhgren
b02644f2b8 AEC3 transparency improvements through refined echo audibility analysis
This CL increases the transparency in AEC3 during regions of low level
echo. What is done is:
-Low-level echoes are smoothly weighted so as to be deemed less
disturbing.
-The time-domain masking effect of the nearend speech is increased for
all frequencies.
-A separate, even more increased, time-domain masking effect is
introduced for lower frequencies.
-The intra-band masking is reduced to reduce the risk of echo leakage.
-The limiting of maximum gain due to filter-bank dynamics is removed
as the usecase for it could no longer be identified.

Bug: webrtc:9159,cromium:833801
Change-Id: I289b92919763124d6c5e5ede19e9a5917877c654
Reviewed-on: https://webrtc-review.googlesource.com/70421
Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
Commit-Queue: Per Åhgren <peah@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22915}
2018-04-18 08:08:44 +00:00
Per Åhgren
251c7355aa Add a specific AEC3 behavior for setups with known clock-drift
TBR=gustaf@webrtc.org

Change-Id: I9c726fc8e1b010255a1bee166c99fe6cb75d7658
Bug: chromium:826655,webrtc:9079
Reviewed-on: https://webrtc-review.googlesource.com/64982
Commit-Queue: Per Åhgren <peah@webrtc.org>
Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22657}
2018-03-28 16:51:57 +00:00
Per Åhgren
b6b00dc180 Safe behavior of the initial echo removal in AEC3
This CL adds functionality to allow removal of any echo occurring
before the render and capture signals have been properly aligned.
The functionality is added in such a manner that the transparency
to nearend is maintained as much as possible.


Bug: webrtc:8883
Change-Id: I813cbbc4c48822e7dffcd9ab6233be4c222089de
Reviewed-on: https://webrtc-review.googlesource.com/49941
Commit-Queue: Per Åhgren <peah@webrtc.org>
Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22107}
2018-02-20 22:01:36 +00:00