Pittsburgh Modular - VILFO

The Pittsburgh Modular - VILFO is not one of those "normal" LFO's. Thanks to the voltage-influence circuitry, it is capable of creating chaotic modulation patterns

Pittsburgh Modular - VILFO - Voltage Influenced Low Frequency Oscillator

The Pittsburgh Modular Voltage Influenced LFO is unique in the modular world. It is a strange, triangle based LFO that lives in an 8hp euro panel. The module offers two outputs, a triangle wave, and a variable waveform that shifts from a triangle to something that is almost not completely a square wave. The VILFO also includes a unique voltage influence circuit. The influence works differently than standard control voltage inputs, it allows the incoming CV to mingle with the LFO waveforms in interesting ways, creating unique modulations and patterns.

The Voltage Influence Circuit

A typical Voltage controlled oscillator works by using a CV input to directly control the oscillation frequency. The more voltage sent to the CV input, the higher the frequency of the ocsillator. The lower the voltage, the lower the frequency of the oscillator. Voltage Influence works by using the CV input to attenuate the frequency of the oscillator while at the same time injecting some of the voltage from ICV Input to the feedback loop of the oscillator. Results can vary from subtle to chaotic. Subtle results can be similar to tremolo, shuffle, or soft reset while more extreme settings produce glitchy, rhythmic, chaotic fluctuations in the frequency of the VILFO. At the most extreme the VILFO can be stopped using Voltage Influence.

Specs

Controls: Large Frequency Knob

Slow/Fast Frequency Range Switch

Influence Control Voltage Attenuator

Variable Waveform Shift / Variable Control Voltage Attenuator

Outputs: Triangle Wave Variable wave

CV Inputs: Influence Control Voltage Input (ICV) Variable Control Voltage Input (VCV)

Frequency Range: Several Minutes to audible mid bass range

Size: 8hp

Depth: (Rev1 -53mm) (Rev2 - 20mm)

Power Usage: 20mA

User Manual