Re: Nyquist Frequency

[a k butler <akbutler@tiscali.co.uk>]

>Example: 48KHz digital A/D converter could capture a 23KHz
>pure
> > sine wave, and output a 23KHz sine wave whose amplitude varies at 1Khz
>- you
> > would hear that 1Khz signal for sure!
>
>Frequencies below Nyquist come through without any change.

well, why don't you actually try it :-)

I did, the 1khz tone is not very loud, but it's there.

Not every fact is in the textbooks ;-)

andy