Pittsburgh Modular foundation 2.0, Manual And Patch Manual

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Filter Module
Description:
The Filter is a voltage controlled, analog, state variable Oilter. The state variable topology was chosen
because it allowed us to produce a very smooth and natural sounding Oilter, in addition to offering several
other modes of operation, each with a unique sound and energy all their own.
The Filter deOines the sound of Pittsburgh Modular. It offers a warm, organic sweep through the full
frequency range. The lowpass Oilter is gummy and relaxed while the highpass is clean and deOined. The
goal was to produce a Oilter that did not have a sweet spot; where the every turn of the frequency knob
produced something interesting.
Modes of Sound
Multiple Oilter responses are available simultaneously including lowpass, highpass, and bandpass. The
fourth Oilter response is a variable response that shifts between lowpass, notch, and highpass.
Switch It Up
Two switches, Gain and Mode, further expand the capabilities of the Filter. The Gain switch modiOies the
functionality of the Q while the Mode switch toggles between Oilter and oscillator modes. Setting the Gain
switch to "1" converts the Q setting into a VCA circuit for the audio input. Switching the Gain switch to "Q"
returns the standard Oilter Q response.
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