Korg Polyphonic Ensemble (was: Re: [sdiy] Secrets of Dan Brown's "The Buchla Code" Revealed

[jhaible at debitel.net]

> I could swear I saw a Korg drawing with a very simple oscillator and  
> one Buchla LPG like Vactrol per KEY. There were several sections  
> shown, then a note to the effect of "remainder of sections as shown".  
> I remember thinking the oscillator was very clever because of the low  
> parts count.
> 
> The resonance was fixed and there were sweep start and extent that  
> worked for all sections. The Vactrol LEDs were in groups with a  
> series resistor per group and the groups were wired in parallel.
> 
> Maybe I dreamed the whole thing, 

It's entirely possible that there is something like this.
I don't know - I don't have all of the Korg schematics.
Mabe it's something pre-dating the PE-1000?
That synthesizer-like organ they built?
It would make sense to have started with a rather expensive
method (vactrol-per-voice), and then turn to something
more cost-effective like the transistor filters per voice,
and an overall vactrol-based filter.
But I'm really just making a wild speculation here.

JH.


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