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Humble Audio Quad Operator Manual

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Quad Operator Manual
​ ​ Q uad Operator Manual
​ ​ T he Quad Operator offers 4 variable waveshape operators for linear FM synthesis.
Implementing frequency modulation synthesis completely from scratch in firmware,
the Quad Operator is able to provide a modern take on frequency modulation
synthesis.
​ ​ F eatures include:
​ ​ O ne knob per function design for true ease of use
​ ​ A ny FM algorithm is possible via modulation matrix
https://paper.dropbox.com/doc/print/JsIQoU7GbeAboEJku9ZgE?print=true
11/8/21, 2:46 PM
Page 1 of 10

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Summary of Contents for Humble Audio Quad Operator

  • Page 1 11/8/21, 2:46 PM ​ ​ Q uad Operator Manual ​ ​ T he Quad Operator offers 4 variable waveshape operators for linear FM synthesis. Implementing frequency modulation synthesis completely from scratch in firmware, the Quad Operator is able to provide a modern take on frequency modulation synthesis.
  • Page 2 ​ ​ A n LFO mode, enabled the generation of phase locked, complex modulation signals ​ ​ W here the unexpanded Quad Operator maintains a one knob per function design discipline, we nevertheless recognized the value of some more advanced algorithm- oriented functionality.
  • Page 3 Quad Operator Manual 11/8/21, 2:46 PM ​ ​ R eset CV — trigger input for resetting all operators phase. Great when using quad operator as a modulation source. operator’s lock versus free state does not affect behavior ​ ​ O perator Functions ​...
  • Page 4 ​ ​ C onnecting the Algo ​ ​ W e used a 15x2 pin header for connecting the Algo to the Quad Operator because they’re cheaper and off the shelf than 15x1. As long as you’re consistent in using the same 15 pin edge on each header, the Algo will function properly.
  • Page 5 Quad Operator Manual 11/8/21, 2:46 PM ​ ​ E xternal Modulation Functions ​ ​ A R FM — the position into which to patch your modulation signal. Accepts audio rate modulation sources. ​ ​ G ain knob — modifies gain via analog input circuit to allow maximum gain while avoiding clipping.

  • Page 6: User Maintenance

    **MORE INFORMATION HERE** ​ ​ A chieving Harmonic Frequency Modulation Results ​ ​ T he Quad Operator can be confusing at first. The multitude of parameters can easily lead a user to noisy, dissonant outputs. This section provides some tips on obtaining more restrained, harmonic results.
  • Page 7 ​ ​ T he Quad Operator is equipped with a precision DAC output, which allows it to generate output signals for each operator output at precise voltages. This is especially useful for calibrating the Quad Operator without an external precision reference voltage.

  • Page 8: Specifications

    Quad Operator Manual 11/8/21, 2:46 PM ​ ​ S tep 2: Triggering the Calibration Procedure ​ ​ O nce you’ve properly patched the module as described above, flipping the switches according to the following “cheat code” to trigger the calibration procedure.
  • Page 9 Quad Operator Manual 11/8/21, 2:46 PM Detune 1-4 + / - 6 semitones Shape Crossfades between sine, triangle, square, sawtooth Gain 1-4 0 to 1 gain multiplier ​ ​ S ignals Specifications Patch Point Type Voltage Range Normal Sample Voltage...

  • Page 10: Customer Service And Support

    Humble Audio Community Forum Humble Audio Eurorack Modules discourse.humble.audio Humble Audio Community Forum • discourse.humble.audio ​ ​ W arranty ​ ​ H umble Audio products are warranted for 12 months from date of purchase. If you’re having an issue with your device that you’re unable to address via the...

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