What is Adobe's "loudness" statistic?

Can someone explain how to calculate it?
Conceptually, what does the difference between the loudness and the avg mean? I know avg is rms and I know how to calculate that.
I am using Adobe Audition to compare alternate masterings of songs extracted from different CDs. I am not sure what to make of Adobe's loudness number.

dnewhous wrote:
Can someone explain how to calculate it?
Conceptually, what does the difference between the loudness and the avg mean? I know avg is rms and I know how to calculate that.
Unfortunately we can't - the exact formula used appears to be proprietary.
And as for 'avg is rms' - well, Average is Average - RMS is the Root of the Mean value Squared, and they are definitely not the same thing; they are calculated somewhat differently!
If you want to see the full depth of discussion about amplitude statistics, and why you will get pretty much nowhere with this, you need to look at these two threads:
http://forums.adobe.com/message/2060852
http://forums.adobe.com/message/1192004

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What is Adobe's "loudness" statistic?

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