Generative Filter Ping by yellowmix
I find pulse waveform tuned all the way down gives a nice DC offset to feed the filter, better than a noise burst. Filter ping sounds best with the high pass in my opinion. Don't connect any cables and you can play this with MIDI, adjust the filter frequency to tune it but where I have it is where it keytracks 100% properly on my unit.
The cables do the generative stuff. OSC2 controls the tempo, S&H changes the pitch, you want the two to be around the same rate. ATT1 and filter Mod Depth control the pitch range, adjust to taste.
ENV1 needs a relatively short release since the next gate will abruptly cut it off. Adjust it accordingly to the tempo set by OSC2.