Tighten up the Westwood AUD detection. Probability of random detections  used to be on the order of 2^8. It is now on the order of 2^45.
Tighten up the Westwood AUD detection. Probability of random detections 
used to be on the order of 2^8. It is now on the order of 2^45.


git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@12892 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg