Quote:
Originally posted by mercury-hg
as dvorak said, CD's are a digital representation of an analog signal (the source recording). this source recording is sampled at a rate of 44.1 kHz which, without going into DSP theory, means that the highest frequency a CD can reproduce is 22.05 kHz. This is beyond the range of human hearing (20 Hz - 20 kHz) so people who claim this to be a detraction from a CD's sound quality is probably full of shit or is part dog. 
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Wellll, I am not totally sure, but I remember someone telling me once that the 22.05 kHz limitation can cause degradation of other frequencies. Like, when you do the high pass to encode the audio for a CD, you will end up muddling other frequencies, too. I don't really believe it, but thought I'd throw it out there.