Originally posted by jayscheuerle
That depends on if the parameters for AAC files are higher than those for CDs. I'm guessing they're not. If they don't have some aspect which is superior to CDs, be it dynamic range or sampling rate, then there's nothing to be gained from taking it from the original source, unless the CD has been remastered to a higher quality since you last bought it.
- j
Just found this:
AAC supports wide range of sampling rates (8 to 96kHz), 48 audio channels, 15 auxillary low-frequency enhancement channel and up to 15 embedded data streams. The format supports bit-rates from 8kbps to 320kbps.
96kHz is more than twice CDs 44.1kHz.. but is it used that way in iTunes or Apple's music store?