Ian Iveson wrote:
"Phil Allison" wrote

The theorem is true for any possible wave form, or combinations of
waveforms and varying in any possible way.

Only whilst remaining waveforms. I don't think music quite
qualifies. Waves are about sameness, music is about change.

There is another problem - the spectrum width... Even 1 Hz square wave has
an extremely wide spectrum, infinite for an ideal square wave. So the sound
might be right but all the attacks are distorted in some way.

And don't forget, Kotelnikov's theorem is not about the signal frequency,
its about signal _spectrum_ . So it is possible to record a 20 KHz
squarewave with 44/16, but when played back it'll become a perfect sinus...

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