instruo-larachd

Instruo Làrachd

Analogue external input utility with envelope follower and footswitch interface

8 HP Eurorack module

The Instruo Làrachd is a fully analogue multifunction utility module that provides various methods of interfacing external signals and interactions into musically useful control voltage signals. It features a stereo line level to dual mono modular level converter, on-board condenser microphone, audio enhancement circuit with tangential distortion, envelope follower with threshold comparator, and dual footswitch interface with included footswitch pedal.

Features

  • Stereo line level to dual mono modular level conversion with up to +40dB gain
  • On-board condenser microphone (same implementation as arbhar)
  • Audio enhancement circuit based on tangential distortion limiting (tanh) with soft clipping and waveshaping
  • Envelope follower with selectable linear or logarithmic/exponential response curves
  • Positive and negative unipolar envelope CV outputs
  • Threshold comparator with adjustable threshold and gate output
  • Dual footswitch interface with included 1/4 inch dual footswitch pedal
  • A button trigger output with adjustable duration (5ms-500ms)
  • A and B button gate outputs
  • Front-panel latching gate button with illuminated indicator
  • Normalled source routing between stereo input and microphone via three-position toggle
  • TRS stereo input splits to separate Left (Tip) and Right (Ring) mono outputs

Controls & Jacks (26)

  • Stereo Line In— Stereo input for line level to modular level conversion. TRS jack splits to Left (Tip) and Right (Ring) outputs.
  • Gain— Manual level control for the signal at the Stereo Line Input. Unity at full counter-clockwise, up to +40dB gain.
  • Left Out— Mono split output of the stereo signal (Tip) present at the Stereo Line Input.
  • Right Out— Mono split output of the stereo signal (Ring) present at the Stereo Line Input. If unpatched, signal sums with Left Out.
  • Output Indicator— LED indication of the signal present at the Left Output.
  • Source— Toggle that switches the normalled input source of the Enhance Input and Envelope Follower Input. Up: stereo line, Center: muted, Down: micr
  • Enhance In— Mono input for audio enhancement. Uses tangential distortion limiting, soft clipping, and waveshaping. Normalled to Stereo Line or Microphon
  • Enhance Level— Manual level control for waveshaping over the signal at the Enhance Input or normalled source.
  • Enhance Out— Mono output of the audio enhancement circuit.
  • Follower In— Input for envelope follower. Normalled to Stereo Line or Microphone via Source toggle. Patching breaks the normal.
  • Response Curve— Switch that selects the response curve of the envelope signal. Left: linear attack/release. Right: logarithmic attack, exponential release.
  • Attack— Manual attack time control for the generated envelope signal. Additive to the envelope. Max slew rate approximately 1V/second.
  • Release— Manual decay time control for the generated envelope signal. Additive to the envelope. Max slew rate approximately 1V/second.
  • Envelope Out— Unipolar positive envelope output.
  • Negative Envelope Out— Unipolar negative envelope output.
  • Threshold— Manual control that sets the threshold of the comparator. When input signal exceeds this level, a gate is generated.
  • Comparator Gate Out— Gate output of the comparator. Goes high when the input signal exceeds the Threshold level.
  • Comparator Indicator— LED indication of the comparator gate output state.
  • Pedal In— 1/4 inch (6.35mm) input for the included Dual Footswitch or other compatible footswitch controllers.
  • Duration— Manual duration control of the trigger signal generated at the A Trigger Out when the A button is pressed. Range: 5ms to 500ms.
  • Trig Indicator— LED indication of the signal present at the A Trigger Out.
  • A Trig Out— Trigger output generated when the A button of the Dual Footswitch is pressed. Duration set by the Duration knob.
  • Gate Indicator— LED indication of the signal present at the A Gate Out.
  • A Gate Out— Gate output. Held high as long as the A button of the Dual Footswitch is pressed.
  • B Gate Out— Gate output. Held high as long as the B button (right) of the Dual Footswitch is pressed.
  • Latching Gate— Illuminated on-panel button that provides a latching gate signal at the B Gate Out. Press to toggle gate on/off.

How-To Guides

  • Guitar Into Modular Effects
  • Microphone to CV
  • Hands-Free Loop Recording

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

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