Sound Advice: Audio-compression quality is subjective
Minneapolis Star Tribune - MN,USA

I have recently started moving my music from CDs to iTunes on my Macintosh and using an iPod. I am uncertain what quality, if any, I am losing with the compression. I typically use the AAC, high-quality setting in iTunes to store the music on my Mac. Is there audible loss of quality from the CD? Or is any loss only noticeable to the high-buck audiophile set?

Mark Nelson, Golden Valley

You will lose something when you use MP3 or AAC compression, but whether it is audible depends on the system playing it and the settings you use when you do the encoding (compression).

Sound quality from a portable music player such as an iPod is highly dependent on the earphones used. Even with good earphones, the difference between high-quality AAC and full-quality CD will be hard to distinguish.

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