[sdiy] Required sample rate for digital envelopes and LFOs

[John Mahoney]

At 12:54 PM 10/1/2007, Tom Wiltshire wrote:

>... On the Pulse, we developed
>control voltage generators that are really fast. The modulation
>update is 523 times per second, which means that each modulation gets
>updated every 1.9mS. This gives you envelopes with analogue feel and
>digital control."
>
>The same article mentions Tom Oberheim's Marion Prosynth in passing,
>which it says "has an update speed of 16 to 22mS!".
>
>So there you go. 523Hz is 'really fast' according to at least one
>important and influential figure in synthesizer design. The MSR2 and
>Prosynth envelopes are both notoriously lazy, but at a rate of
>50-60Hz, I'm not surprised.

Uh, that was over 10 years ago. I believe that we've raised our 
expectations in the mean time. :-)

I can hardly believe they were generating software envelopes at 50-60Hz.
--
john


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