Just to footnote that there is a review at Stereophile Magazine, complete with measurements and graphs and all, that concludes:-
" The iPod's measured behavior is better than many CD players—ironic, considering that most of the time it will be used to play MP3 and AAC files, which will not immediately benefit from such good performance. But if you're willing to trade off maximum playing time against the ability to play uncompressed AIFF or WAV files, the iPod will do an excellent job of decoding them. Excellent, cost-effective audio engineering from an unexpected source.—John Atkinson"
http://www.stereophile.com/showarchives.cgi?934:0
Just for the record (pardon the pun), uncompressed cd-quality audio takes up about 10 megs per stereo minute* That means that on a 40 gig iPod you would be able to hold up to 4000 minutes of uncompressed cd quality wav or aiff files**. The iPod battery only lasts 8 hours, or 480 minutes!
(That is all assuming, of course, that I did the math correctly. :-)
Reggie Bautista
*44100 samples per second times 16 bits per sample equals 705600 bits
per second. 705600 bits per second divided by 8 equals 88200 bytes,
which rounds up to 9 megabytes. There is also a small amount of overhead
for format information in the header of the file, but not a full megabyte worth.
Yet I've always been told in recording classes and electronic music classes
that a good estimate is 10 megs, not 9 megs. I assume this is merely for
convenience since it's a number that allows for quick and dirty size estimates
such as the one I made. If my math is faulty, please let me know! Thanks.
** I'm not sure how much (if any) overhead the iPod has per file, but the article didn't mention any. If there is overhead beyond the header info I already mentioned, I'm pretty sure it wouldn't make up the megabyte per minute difference mentioned in "*".
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