It’s not lousy, it uses a different system which generates a different value.
It seems that you would like them to use the system used by DR database. For reasons discussed extensively on this website, they don’t. This is from Roon’s KB explaining why they use R128 instead of the system the DR database uses:
As with Volume Leveling Roon’s dynamic range calculation is done based on R128 standards. In technical terms, Roon’s “Dynamic Range” is the same as R128’s “Loudness Range”.
That there are older methods of computing Dynamic range out there–most commonly by measuring the “Crest Factor”.
Crest Factor measurements reflect the difference between the average volume and the peak volume–so they are easily swayed by periods of silence or near-silence (which distorts the average), and by short-duration peaks–which may not represent the volume of the loudest parts of the track accurately.
The R128 method is more resillient. It begins by computing the statistical distribution of loudness values present at different points in the track, ignoring periods of silence. The computed dynamic range represents the difference between the 10th percentile and the 95th percentile of that distribution. In other words, the “top” of the range is the volume level that 95% of the track sits below, and the “bottom” is the volume level that 90% of the track sits above.
Though both methods portray roughly the same information, Crest Factor values aren’t directly comparable to values produced using the R128 method.
No, it’s not like Centigrade or Fahrenheit. Those two scales are measuring the same thing and you can easily convert from one to another. You can’t convert between R128 and the crest factor results from the DR Database.
Moderators have temporarily closed this thread as it was being derailed by continued discussion of moderation. Read this post first and then open a thread in the Roon Community Site section if you wish to discuss moderation.
Thanks, I didn’t know about the Orban loudness meter program. Running it on a smattering of my files reveals a pattern: most music I have that is not expressly mastered in “audiophile” ways has plenty of reconstructed samples over 0dBFS, even if its loudness measures are pretty good.
I suspect that Roon’s volume leveling hides these from my DAC in most cases.
This is another one of those issues with Roon where they would be better off giving users the choice to select the scale this wish to use and are more familiar with. More options is better than being told to just use an option we did not ask for or want.