Here are some "Official DR values" for a semi-random sampling of stuff on my hard drive. Sorted by DR num, then by artist.
What does it actually mean?
From the site:
What does the DYNAMIC RANGE METER do?
...
For technicians, this is the average cumulative difference between peak and loudness (RMS) over a specific period of time (duration of a song or album) and is a whole number value given in decibels. Just the top 20% of the loudness are taken into consideration to ensure that songs with a long intro and an over compressed refrain doesn't appear with a too high DR value. The DR value represents the grade of compression of released music in a whole number system.
Looks like they just they subtract RMS from peak and call it DR (dynamic range), but only apply the calculations to the loudest parts of the recording. To get that set of values to a single DR value they're probably using either min, avg, or max (I don't know...)
There are some points under the agreement section that many people probably won't agree with...
1. Oversampled brickwall limiting to limit all
intersample peaks to -0.3 dB. If you're limiting intersample peaks then why couldn't this be -0.2 or -0.1 or even -0.05?
2. Seems to say anything under DR14 (DR13, DR12, etc) must be altered during mastering to become the equivalent of DR14. (ex. any DR5 material will have to have the master fader lowered by approx. 9 dB prior to export, etc.) Almost every song/album you list would have to have the master file levels lowered in order to be re-released under the DR standard...