"> What's the voltage range you're using? 0-1V or something higher? What about the result for several octaves, is it only the lowest note that's sharp?"
-- e_v_k
The range is 0V to +5V in this experimant. Transposing up tones, semitones or octaves yeilds the same result and just the first note is sharp.
In response to a question you asked earlier that I missed... When the eronious C sharp plays the GVCO tells me its playing C sharp. It doesn't think its playing C but outputting C Sharp.
I did some new experiments with the internal quantizer on this morning and here are the results please take it as read that with the quantizer off all sequences play back as expected as it does if I use an external quantizer.
If I send in a sequence that is C then C one octave up the two notes play back at the same pitch. If I increase the interval between the two Cs by another octave I get a one octave interval, this behaviour is the same when the quantizer is set to chromatic or octaves.
I also tried another experiment inspired by noodle_hut.
If I create a chromatic sequence by ignoring the voltages coming from the sequencer and just setting them by ear, I can get the GVCO to play back a chromatic scale ( with the internal quantizer on ) but every note is a semitone sharp above what the GVCO its tuned to when the quantizer is off. So in some ways one could argue it is, kinda, working.
But I have access to six other quantizers and not one of them produces the results the internal quantizer does. They all work as expected and what you put in you get out ( unless you put in a rouge voltage and then that gets corrected/adjusted so the resulting note is what was desired )