[Gllug] re: nice square pulses

Ian Norton bredroll at darkspace.org.uk
Mon Jun 14 19:33:55 UTC 2004


On Mon, Jun 14, 2004 at 03:56:31PM +0100, Andrew Halliwell wrote:
> And verily, didst t.clarke announce to the hordes:
> 
> Yep, a theoretical pure square wave is the "fundamental frequency" (that's
> the number of on/off or high/low pairs in a second). + every single odd
> harmonic of that fundamental frequency. 
> 
> so F, F*3, F*5, F*7, etc... each of these gets smaller the further from the
> fundamental one they get... So a pure square wave is and always will be
> purely theoretical....
> 
> But it shows how complicated things can get.

poor Mr Nyquist.

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