As made on Mich's modular synth. Uses 3 oscillators, one of them used as a slow LFO, the other a bit more rapid. Breadboarded VCA was used to for the fadeouts in the bloops. The same Oscillator that takes care of the volume fadeout was used to modulate frequency of the main oscillator, by using the pulse output at a narrow pulse width, and connecting it to a frequency modulation input.