noise-engineering-roucha-legio

Noise Engineering Roucha Legio

Stereo multimode filter with wavefolding and gateable bypass

6 HP Eurorack module

Roucha Legio is a 12dB/octave stereo state-variable multimode filter with integrated wavefolding. It offers lowpass, bandpass, and highpass modes selectable via switch, with a wavefolder that can be placed pre-filter, post-filter, or both. The Frequency encoder provides accelerating control with 1V/octave tracking on the CV input, and tapping the encoder toggles bypass on/off. A gate input allows automated bypass switching. Part of the NE Legio platform — firmware can be swapped via USB.

Features

  • 12dB/octave stereo state-variable filter
  • Lowpass, bandpass, and highpass modes
  • Integrated wavefolder (pre/post/both)
  • Accelerating frequency encoder with tap-bypass
  • 1V/octave CV tracking on frequency
  • Gateable bypass via CV input
  • Stereo I/O with L-to-R normalling
  • Output up to 16Vpp
  • Legio platform — firmware swappable via USB
  • 6HP, 25mm deep
  • 140mA +12V, 22mA -12V

Controls & Jacks (13)

  • Frequency
  • Resonance
  • Fold
  • Fold Position
  • Filter Type
  • Bypass CV
  • Freq CV
  • Fold CV
  • Res CV
  • In L
  • Out L
  • In R
  • Out R

How-To Guides

  • Stereo Lowpass Sweep
  • Wavefold + Filter
  • Rhythmic Filter Gating
  • Envelope-Controlled Filter

Explore the interactive Roucha Legio panel on BleepDex — tap any control to learn what it does.

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