It has eight functions and a slider. It's a dead duck. Choose the functions by clicking on a knob or button, and adjust the functions by moving the slider bar from left to right or by clicking in the slider space. The Wave Select function lets you use either a sine wave or a triangle wave. Pitch adjusts the frequency of the sound from 1 Hz to 12 kHz.
Level sets the volume of the sound.
Decay determines the length of decay, or gradual fade into silence. Modulation Depth sets the amount of modulation you want to add to the sound. Modulation Speed sets the rate of modulation. Modulation Type determines the kind of modulation you add to your sound. We made some bass drums with a meaty low-end that rivals the old analog machines.