"Peter Larsen" wrote in message
...
wrote:
I happen to operate from the gut. And my gut tells me, common sense,
that the more you compress something, not only can you raise it's
RMS, but the closer more of its peaks will continuously reside near
full-scale.
Your gut is wrong, you can easily compress music by *reducing* the peaks,
and thus they are further from dFS. You can *increase* the "RMS" *and* also
a *reduction* in peak levels with compression. That's the way it was usually
done in the analog era.
You're absolutely right - most of the loudening effect occurs to the
RMS, but the peaks become somewhat more sustained near FS too.
Leave FS out of it, it is irrelevant, in this context only crest factor
matters.
Not totally irrelevent, since most pop CD's these days are digitally clipped
to hell and back, the crest factor will also be reduced even without any
extra compression. Of course they add plenty of that as well.
Trevor.