State Variable Filter

The sound of the pickups passes through a resonant voltage-controlled state variable filter. The filter attenuates frequencies above or below a certain cutoff point while allowing others to pass through. The resonance control emphasizes frequencies near the cutoff point, imparting a distinct ringing character.

Controls

CONTROL	FUNCTION
Cutoff	Sets the filter's cutoff frequency
Resonance	Emphasizes frequencies near the cutoff
CV Amount	Sets how much an incoming CV signal affects the cutoff frequency, this is normalled to the MOD output

Filter CV

The filter cutoff can be adjusted through the cutoff knob, or by sending a voltage to the CV input. The CV input knob adjusts how much the voltage at the CV input affects the filter's cutoff.

Normalled Input

When nothing is plugged into the CV input, the MOD output is automatically routed to the filter's CV input.

Filter Types

Using the app, the filter can be reconfigured into three variants. The icon accesses the menu where filter type can be chosen. The Cutoff, Resonance, and CV controls remain the same in every case:

TYPE	DESCRIPTION
Low Pass	Frequencies above the cutoff point are filtered out.
High Pass	Frequencies below the cutoff point are filtered out.
Band Pass	Frequencies above and below the cutoff point are filtered.