Pertinent question:  Are you using RX6’s “Loudness” or “Leveler" module? I find Leveler does a better, more consistent job for me.

<L>
Lou Judson
Intuitive Audio
415-883-2689

On Oct 5, 2018, at 1:11 PM, Karl E. Fitzke <[log in to unmask]> wrote:

> Derivative Access Copies:
> 
> 
> We create create mp3 access copies of relatively consistent loudness by pushing archival masters through LUFS (Izotope RX 6 Advanced).  That's a modified BS.1770-2/3, using -16 dB LKFS and -1 dB True Peak instead of -24 and -2 respectively.
> 
> 
> I can see the argument to stay at -24 dB LKFS or something between that and -16, especially for high quality audio with a lot of dynamic range that one wants to maintain.
> 
> 
> But -16 worked well given the majority of spoken word (high crest factor) and music recordings (of relatively medium to low crest factor) that we typically work with, either of which can vary greatly in average level throughout a tape side however.  On the samples of material we've tried it on so far, -16 LKFS still only limits transient peaks for the most part, i.e without audibly "frying" the material.  Similar to online music services based on our research too.