[sdiy] "Living VCOs" PCB in 2009 ?

[Mattias Rickardsson]

2008/12/8 JH. <jhaible at debitel.net>:
>>>> ...some of that early Moog and EMS character...
>
>>Other than relative tuning, I think the only way a VCO could exhibit a
>>specific "character" is by the shape of its waveforms.
>
> I would even go further and say: forget the waveforms.

Having read the whole thread, I realize how meaningless it would be to
further discuss VCO character, but when you say a thing like that...
what on earth (GND) do you mean??? :-)

CV tracking linearity, stability over time, and phase-locking to other
nearby circuits - are there more parameters left that could affect the
"character"?

Personally I think that obscure waveform shapes are very important for
adding character to a VCO (and that's why I'm surprised to read your
words above), but since the corresponding errors/features in a VCO
core also gives worse tracking, the waveforms of most available VCOs
are always very similar (nearly perfect). So the strange waveshaping
should probably take place after the core... which it probably does in
the synths that are often said to have "VCOs with character".  0:-)

/mr