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echo-cancel: Add alternative echo-cancellation implementation

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This adds Andre Adrian's AEC implementation from his intercom project
(http://andreadrian.de/intercom/) as an alternative to the speex echo
cancellation routines. Since the implementation was in C++ and not in
the form of a library, I have converted the code to C and made a local
copy of the implementation.

The implementation actually works on floating point data, so we can
tweak it to work with both integer and floating point samples (currently
we just use S16LE).
This commit is contained in:
Arun Raghavan 2010-09-07 13:43:58 +05:30
parent 126e1336b2
commit 526277c97c
9 changed files with 802 additions and 1 deletions
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@ -10,4 +10,8 @@ LGPL licensed and the server part ('libpulsecore') as being GPL licensed. Since
the PulseAudio daemon and the modules link to 'libpulsecore' they are of course
also GPL licensed.
Andre Adrian's echo cancellation implementation is licensed under a less
restrictive license - see src/modules/echo-cancel/adrian-license.txt for
details.
-- Lennart Poettering, April 20th, 2006.