Just dug up my schematics and implementation of EML's VP-1, so if anyone and probably everyone needs a copy let me know "The voltage processor uses two operational amplifiers to provide variable inverting and non-inverting signal gain, plus a variable voltage offset" In other words converting 1 volt octave to be used with EML's 1.2 volts per octave system.
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VP-1 Voltage Processor
2007-01-26 by Robert