[sdiy] string machine technology?

[jhaible at debitel.net]

Here's the circuit of a triple BBD string chorus, inspired by the ARP Omni:

http://jhaible.heim.at/polykorg/jh_polykorg_ens1.pdf
http://jhaible.heim.at/polykorg/jh_polykorg_ens2.pdf

I've built this for the PolyKorg Clone; but it has nothing to do with the 
original PS--3x00 chorus: it's ARP technology adapted to easily avalable 
components. Runs from +/-15V.

The ARP Omni uses a slightly different modulation scheme from the Solina,
Crumar Performer, and the likes. A sound sample from my circuit can be found 
here:
http://jhaible.heim.at/polykorg/samples/jh3200_ensemble.mp3

JH.

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