An audio example would be good.

If you say the changes are sudden random changes, then I assume, that
you have a noisy octave switch or pitch potentiometer.

Florian

Am 09.01.2017 um 10:57 schrieb sj230962@... [Doepfer_a100]:

>
>
> I can record some audio and some oscilloscope video to show the
> problem if that would help...
>
>