The State Variable VCF is a filter with LowPass 12dB and 18dB, BandPass and HighPass outputs. Due to the chosen topology, the 18dB output has a custom feature. It is a self-oscillating VCF that can be used as a sine-wave VCO, with the resonance set to the maximum. It has two audio inputs with independent volume controls. CV1 and CV2 are cut-off frequency control inputs, allowing for controls and modulations from two distinct and simultaneous sources with independent Width controls.