The Envelope Follower allows the relative amplitude of input signals control Filtomika's Cutoff frequency. This is a really fun and useful addition, and particularly useful with guitar and bass signals for autowah-type effects. It's also real nifty when used with drum loops!
Attack- Defines the length of time for cutoff to rise from minimum to maximum when an input signal is detected.
Decay- Defines the length of time for cutoff to fall from maximum to minimum following the attack stage.
Amount- Sets how much the Attack/Decay envelope affects filter cutoff frequency.