Low Pass

First Order

Second Order Resonant

Massberg Low Pass Resonant

Bristow Johnson Low Pass Resonant

State Variable Low Pass Resonant

High Pass

First Order

Second Order Resonant

Band Pass

Band Pass

Band Stop

Butterworth

Low Pass

Low Pass Variable Order

High Pass

Band Pass

Band Stop

Variable

Oberheim Variations

Cascade Low Pass Resonant Variable Order 2,3,4,5,6

Variable Slope

Linkwitz Riley, Low Pass, High Pass, Band Pass

Polar Morph Biquad Visual Poles and Zeroes

Virtual Analog

Voltage Controlled Low Pass Resonant Ringing

Voltage Controlled High Pass Resonant

Ladder Low Pass Resonant

Diode Low Pass Resonant

Parametric

Parametric

Low Shelf, First Order, Second Order

High Shelf, First Order, Second Order

Parametric Five Band EQ