Classic multi-mode filter.
A deeper exploration of the Pittsburgh Filter sound, the Binary Filter is a voltage-controlled, analog, state-variable filter based on the filter of the Lifeforms SV-1. The state variable topology was chosen because it allows for a smooth and natural sounding filter in addition to offering several other modes of operation, each with a unique sound and energy all their own.
There Is No Sweet Spot
This Filter defines the Jekyll and Hyde sound of Pittsburgh Modular. On the one hand, it offers a warm, organic sweep through the full frequency range. The lowpass filter is gummy and relaxed while the highpass is clean and defined. On the other hand, switching into unstable mode turns the Binary Filter into a howling beast capable of chunky walls of overdrive and noise. The goal was to produce a filter that does not have a single sweet spot. We worked to make every turn of a knob or flip of a switch offer something new and musically engaging.
Multiple filter responses are available simultaneously including lowpass, highpass, and bandpass.
Switch It Up
The stability switch selects between Stable and Unstable modes. Set to Stable, the Lifeforms Bipolar Filter will not self oscillate, and operates as a clean, organic filter. Set to Unstable and without an incoming audio signal, the Bipolar Filter produces a high quality voltage controlled sine wave. Adjusting the Q while in Unstable mode modifies the shape of the waveform. Add an incoming audio signal to the Unstable mode and the output changes dramatically. At normal settings the incoming signal modulates the self oscillating filter to produce complex sounds. At more extreme settings, where the Bipolar Filter starts to struggle with self oscillation, the Q adds anything from ringing fuzz to heavy distortion to the incoming audio.
- Panel size: 8hp
- Depth: 24mm
- Power Usage: +12v 22mA, -12v 22mA
- Does not require +5v
- Reversed power polarity protection
From nice to nasty, the Binary Filter spans your own dichotomy.
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