aluebs 45daf7b26f Implement new version of the NonlinearBeamformer
Sounds better according to a MUSHRA listening test.
The computational complexity is unaffected.
An empirically estimated gain was added to compensate for the attenuation introduced by the algorithm.
There are some TODOs, which I will address in follow up CLs.

It was tested in Hangouts without headphones and highest volume, to make sure it doesn't affect the AEC.

Review URL: https://codereview.webrtc.org/1378973003

Cr-Commit-Position: refs/heads/master@{#10308}
2015-10-17 00:04:14 +00:00
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2015-09-29 22:45:23 +00:00