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aluebs@webrtc.org a0ce9fa2a6 Call NS AnalyzeCaptureAudio before AEC 
This attenuates the noise pumping generated from the NS adapting to the AEC comfort noise.

When there is echo present the AEC suppresses it and adds comfort noise. This is underestimated on purpose to avoid adding more than the original background noise. The NS has to be called after the AEC, because every non-linear processing before it can ruin its performance. Therefore the noise estimation can adapt to this comfort noise, making it less aggressive and generating noise pumping.

By putting the noise estimation analysis stage from the NS before the AEC, this effect can be avoided. This has been tested manually on recordings where noise pumping was present: Two long recordings done in our team by bjornv and kwiberg plus the most noisy (5) recordings in the QA set.

On the other hand, one risk of doing this is to not adapt to the comfort noise and therefore suppress too much. As verified in the tested files, this is not a problem in practice.

BUG=webrtc:3763
R=andrew@webrtc.org, bjornv@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/24679004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7289 4adac7df-926f-26a2-2b94-8c16560cd09d
2014-09-24 14:18:03 +00:00
chromium Change Chromium .gclient to not use Managed mode. 2014-09-04 14:58:55 +00:00
data Call NS AnalyzeCaptureAudio before AEC 2014-09-24 14:18:03 +00:00
resources NetEq background noise generation off by default 2014-08-13 09:45:40 +00:00
talk Thread annotation of rtc::CriticalSection. 2014-09-24 07:10:57 +00:00
third_party Roll gtest-parallel. 2014-09-10 09:29:12 +00:00
tools Adds asan suppresions for rtc_unittests 2014-09-18 13:32:43 +00:00
webrtc Call NS AnalyzeCaptureAudio before AEC 2014-09-24 14:18:03 +00:00
.clang-format Style-option file for clang-format. 2013-11-25 15:30:37 +00:00
.gitignore Android APK tests built from a normal WebRTC checkout. 2014-09-01 11:06:37 +00:00
all.gyp Allow root build dependencies to be overridden. 2014-08-08 00:08:58 +00:00
android-webrtc.mk Changed a flag in ARM build for platform build. 2012-09-08 00:32:59 +00:00
AUTHORS Unit tests for SSLAdapter 2014-09-23 05:56:44 +00:00
BUILD.gn Initial GN work for WebRTC 2014-06-17 08:54:03 +00:00
codereview.settings Add a root codereview.settings file. 2013-04-24 02:08:50 +00:00
COPYING Libjingle in webrtc needs updated AUTHORS, COPYING, LICENSE_THIRD_PARTY AND README. 2013-07-16 18:04:56 +00:00
DEPS Narrower include for constructormagic.h in Chromium. 2014-09-17 07:44:33 +00:00
drover.properties Add a drover.properties file for reference. 2013-05-30 18:15:54 +00:00
libvpx.mk Change android makefile to reflect recent file structure change 2011-07-13 17:49:49 +00:00
LICENSE Updated license path in LICENSE and LICENSE_THIRD_PARTY. 2012-11-22 12:06:21 +00:00
license_template.txt Update template to follow chromium copyright style 2013-04-24 01:01:28 +00:00
LICENSE_THIRD_PARTY Libjingle in webrtc needs updated AUTHORS, COPYING, LICENSE_THIRD_PARTY AND README. 2013-07-16 18:04:56 +00:00
OWNERS Update root OWNERS file 2014-08-25 14:41:41 +00:00
PATENTS Add references to src/ copies for LICENSE etc. 2011-10-26 01:05:07 +00:00
PRESUBMIT.py Remove linux_memcheck from default trybots. 2014-09-17 06:46:38 +00:00
setup_links.py Cleanup .gclient_entries to avoid sync problems. 2014-09-18 13:47:23 +00:00
sync_chromium.py Cleanup .gclient_entries to avoid sync problems. 2014-09-18 13:47:23 +00:00
WATCHLISTS Add myself to common_audio and audio_processing watchlists 2014-09-11 10:11:43 +00:00