The envelope modifies the loudness contour of a sound. It takes a sound input and shapes it into something youd hear from an acoustic musical instrument like a piano or saxophone.
HOW IT WORKS
This envelope has 2 controls: attack which is how long it takes to ramp up to maximum volume and decay which is how long it takes to go down to silence again. You can use its third bitSnap to trigger the envelope from different sources like the keyboard. Try putting the envelope after an oscillator being controlled by a micro sequencer!