iTunes volume control implementation version 8?

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low.pfile

iTunes volume control implementation version 8?
« on: 25 Apr 2009, 12:43 am »
A few of versions back of iTunes it was written not to use the iTunes volume slider (software) since it degraded the music quality ( ~removing data bits ) I remember reading that this was no longer the case in version in Version 7. Is it conclusive that no music data is being lost with the recent versions (8.0)?

I ask because would would like to use the software volume in iTunes to level match during informal digital vs. analog comparisons. That way I can just switch the input selector on my preamp. I currently change the volume at the preamp but that takes a bit of time checking back and forth with the the SPL meter. I'd rather set it once for an album and then switch back and forth for a more immediate comparison. If there is some question about the current iTunes volume control implementation I would not use that for digital to analog comparisons.

Normally, through my main system I playback itunes at 100% volume. Original AIFF(WAV) format.

Anyone have the details?

cheers, ed


Crimson

Re: iTunes volume control implementation version 8?
« Reply #1 on: 25 Apr 2009, 01:09 am »
You've got it right. iTunes 7.x and above provides 24-bit dithered volume control via it's own high quality SRC for 16-bit material. I use it quite a bit, and think you'd be OK for informal tests.