hendrik on 23 Mar, 2015 10:16 AM
I would love to give you a straight forward answer, but
unfortunately I can't. Here's why:
beaTunes does perform a ReplayGain analysis and writes the
results to both the regular ReplayGain tags as well as the
proprietary ITunNORM tag, if you enabled Embed non-iTunes
tags in the beaTunes general preferences. You can check the
results in iTunes under Get Info ->
File -> Volume ( notGet Info -> Options -> Volume
Adjust—that's something different).
beaTunes writes straight to the file, because there is no API
for this. As you can probably imagine, iTunes does not monitor all
files all the time. In other words, until it plays a file, it has
no reason to check what's stored in the metadata. Therefore it's
highly unlikely that it syncs said metadata to iCloud. At least not
until a file is played at least once. And even then I am not
entirely convinced it does. The problem here is verification. While
you can turn Sound Check on on your iPad/iPhone, I know of
no way of figuring out, what exactly the current gain adjustment is
(in dB). The Music app does not display it anywhere...
So this may or may not work. I suspect though it doesn't. For a
definite answer you might want to ask Apple.
But perhaps regular Sound Check is good enough for you.
Have you turned it on (you'd need to in any case)?