Korg Poly800/EX800 Users

So do you use/did Korg use this method to generate pseudo-random noise?

a|x



On 4 Jan 2010, at 15:27, Michael Hawkins wrote:

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> A high frequency sine wave sampled at low frequency will resemble a  
> random number generator.
>
> An infinitely high frequency sine wave sampled at infinitely low  
> frequency would be a true random number generator. Except that  
> since the sample rate is infinitely low, it would take an infinite  
> amount of time to prove it.
>
> ;-)
>
> Mike
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> From: gordonjcp <gordon@...>
> To: korgpolyex@yahoogroups.com
> Sent: Mon, January 4, 2010 9:58:23 AM
> Subject: [korgpolyex] Re: Random sample and hold - please explain
>
>
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> --- In korgpolyex@yahoogro ups.com, Electrohead  
> <electrohead2000@ ...> wrote:
> >
> > So it's sampling from white noise? That's a great idea. Very random.
> > Most synths sample a sine wave for S&H.
>
> Mmm, none that I've seen do ;-)
>
> What you'd get is a very aliased sinewave depending on the  
> frequency of te sine and the LFO rate. It's a useful if strange  
> effect, good for cyclic patterns. Feeding a squarewave in will give  
> you a variable pulse width pulse output, and a sawtooth wave will  
> give you a "staircase" wave. A mixture of sinewaves (think Hammond  
> organ waves) would give you very complex patterns.
>
> Right, must go and build an outboard S&H now...
>
> Gordon MM0YEQ
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