SURGES

Analog Four-Pole Filter

(Mutable Instruments Ripples Clone)

Multimode filter

• High-pass, band-pass, and low-pass outputs.
• Switchable slope control for the band-pass and low-pass outputs. The slope of the high-pass output varies with resonance.
• The low-pass output goes through an internal VCA - the perfect “end of subtractive chain” output!

CV inputs

• Un-attenuated frequency CV, calibrated for 1V/Oct tracking of the self-oscillation tone over 4 octaves.
• Frequency CV with attenuverter.
• Resonance CV. Self oscillation starts at 4V. Control voltages above 5V are non-linearly compressed, for fine control of resonance overdrive.
• VCA level for the low-pass output.

Clone of the Mutable Instruments Ripples