Hi

Am 24.09.2017 um 02:20 schrieb a11@... [Doepfer_a100]:

> But it is about the sound coming out of the distorting filter.
> It is this sound that I want to V/Oct [not digitally], because the sound
> changes when its pitch changes.

The sound only changes, because the filter is not controlled by the
same voltage(s) as the VCO. The VCO has an LFO Modulation on it, which
the VCF doesn't have. So the relation oscillator-frequency to
filter-frequency changes all the time, and in consequence the sound
changes all the time.
If this modulation would affect the filter too (and if the relation
F-osc to F-filte would be on one of these sweetspots), then the sound
would be steadily distorted the same way.

Florian