[Webkit-unassigned] [Bug 77856] Have the DynamicsCompressorNode support multi-channel data

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=77856





--- Comment #5 from Raymond <rgbbones at gmail.com>  2012-02-07 22:50:31 PST ---
> 
> Hi Raymond, so far I've tested:
> 0.5f * (abs(undelayedL) + abs(undelayedR));
> 
> which appears to work well on a variety of real-world source material.  Please give me a little time to test your second approach (using max).  I understand your reasoning, but want to be very careful about how the change translates to real-world source material which I've been testing with the algorithm for a long time.  I'll get back with the results...

Hi Chris

I test the 0.5f * (abs(undelayedL) + abs(undelayedR)) approaching and max approach again today.

With 3 scenario

1: L=sin(t) R=sin(t+PI)
2: L=sin(t) R=sin(t+PI/2)
3: L=sin(t) R=0

the 0.5f * (abs(undelayedL) + abs(undelayedR)) not only works for case 1, but not works for case 2 and case 3.

While the max approach works fine for all these 3 cases.

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