0332c2db39
The following algorithmic functionality was added: -Add support for an exact regressor power to be computed which avoids the issue with the updating of the filter sometimes being unstable. -Lowered the fixed step size of the adaptive filter to 0.05 which significantly reduces the sensitivity of the adaptive filter to near-end noise, nonlinearities, doubletalk and the unmodelled echo path tail. It also reduces the tracking speed of the adaptive filter but the chosen value proved to give a sufficient tradeoff for the requirements on the adaptive filter. To allow the new functionality to be selectively applied the following was done: -A new Config was added for selectively activating the functionality. -Functionality was added in the audioprocessing and echocancellationimpl classes for passing the activation of the functionality down to the AEC algorithms. To make the code for the introduction of the functionality clean, the following refactoring was done: -The selection of the step size was moved to a single place. -The constant for the step size of the adaptive filter in extended filter mode was made local. -The state variable storing the step-size was renamed to a more describing name. When the new functionality is not activated, the changes have been tested for bitexactness on Linux. TBR=minyue@webrtc.org BUG=webrtc:5778, webrtc:5777 Review URL: https://codereview.webrtc.org/1887003002 Cr-Commit-Position: refs/heads/master@{#12384}
WebRTC is a free, open software project that provides browsers and mobile applications with Real-Time Communications (RTC) capabilities via simple APIs. The WebRTC components have been optimized to best serve this purpose.
Our mission: To enable rich, high-quality RTC applications to be developed for the browser, mobile platforms, and IoT devices, and allow them all to communicate via a common set of protocols.
The WebRTC initiative is a project supported by Google, Mozilla and Opera, amongst others. This page is maintained by the Google Chrome team.
Development
See http://www.webrtc.org/native-code/development for instructions on how to get started developing with the native code.
More info
- Official web site: http://www.webrtc.org
- Master source code repo: https://chromium.googlesource.com/external/webrtc
- Samples and reference apps: https://github.com/webrtc
- Mailing list: http://groups.google.com/group/discuss-webrtc
- Continuous build: http://build.chromium.org/p/client.webrtc