Pittsburgh Modular Patch Box Manual And Patch Manual page 17

Footswitch as A/B Switch
Starting with a simple patch that uses the Crush down-sampler module, we are going to
add a footswitch to flip between two different modulation sources.
The footswitches can be used to switch between two audio or control voltage sources by
patching the audio or control voltage sources into the left and right jacks. The center jack
becomes the output.
The footswitches can also be used to route a signal between to destinations. To do this,
the input audio or control voltage signal is patched into the center jack and the left and
right jacks are used as output jacks.
This patch connects the triangle wave output of LFO 1 to the left jack of Switch 1 and the
triangle wave output of LFO 2 to the right jack of switch 1. The center jack is patched to
the Mix CV input of the Crush module. That means that when the footswitch LED is lit, the
Crush mix will modulate at the speed of LFO 2 and when the the footswitch LED is off, the
Crush mix will modulate at the speed of LFO 1.
This patch does not utilize the expression pedal inputs.
17