2 .2 BIG MUFF PI ANALOG CIRCUIT AND TRANSFER FUNCTIONS

• 1 Resistance 39K: R8. • 1 capacitor 10nF: C8.

Output

• Mixed together by a single linear 100K Tone potentiometer. • The cut-off points are designed so that their interweaving effect introduces a middlefrequency scoop/notch at 1KHz when the potentiometer is set to the middle position [4].

2 .2 BIG MUFF PI ANALOG CIRCUIT AND TRANSFER FUNCTIONS

Figure 1. Big Muff Pi Tone Control Schematic with Low Pass and High Pass Labelled

The analog transfer functions for low pass and high pass: -

VoH Vi

sRC sRC + 1

Figure 2. Analog Transfer Function for a High Pass Filter