[sdiy] GRP Genesi

[Roman Sowa]

At first glimpse, just looking at block diagram, it looks like typical 
PLL, but instead of phase comparator it uses F-to-V conversion and 
voltage comparator. Same divider ratio is used in the feedback as in the 
vaweform output, so the VCO works only within 1 octave while overall 
output spans over many octaves.

Roman

W dniu 2026-07-05 o 11:26, Neil Johnson via Synth-diy pisze:
> Michael E Caloroso wrote:
> 
>     US 3,930,429
> 
> 
> Don did a write-up of it here: 
> https://till.com/articles/arp/patents.html#US03930429 
> <https://till.com/articles/arp/patents.html#US03930429>
> Very weird architecture indeed!
> 
> Neil
> 
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