model

Zirconia Comp EQ is a component-for-component digital model of the Diamond Comp EQ’s Tilt-EQ knob

While lacking the pedal’s optical compression circuit, this plugin adds a variable tilt-frequency knob between 200 and 1000 Hz

This is the schematic that provided the basis for analysis

Using the provided resistor and capacitor values above (with some transistor replacements), the nodal DK method allows us to calculate our Vout based on Vin as well as update states for every input sample

Our process block is relatively simple — if the bypass footswitch isn’t engaged, we process every sample through the processSample function above. When a knob changes, we update our filter coefficients accordingly