4.3. VCOs 1 and 2
The VCOs have some similar features that we'll cover here. VCO-specific features are
described in the sections that follow.
4.3.1. Similar features
4.3.2. Tune
Each VCO has a Tune knob, but they can respond differently for each preset.
• The VCO 1 Tune knob range is +/- 2 octaves, and its LED lights when set to an
octave increment (+/- 2, +/- 1, or center). The knob tuning changes chromatically,
but when "Pitch Vco1" is a mod route destination it can change smoothly,
chromatically, or according to a scale.
• The VCO 2 Tune knob has a variable range, and also several ways it can be
modulated through the Mod Matrix.
Hold [Settings] and move one of those controls to access their parameters. They are also
found at Settings/Voice/VCO.
4.3.2.1. Pulse Width
Pulse Width adjusts the distance between the rising and falling edges of a square wave.
When the distances are equal, that's a pure square wave; it sounds a bit like a clarinet.
When the distances are not equal, the square wave sounds increasingly thin. At the
maximum setting the square wave disappears, and so does the sound.
4.3.2.2. Mixable waveforms
The VCOs constantly generate three basic waveforms (sawtooth, triangle, and square), with
two knobs on the bottom row of the VCO module for adjusting the mix between them. For a
detailed explanation, see
. It applies equally to both VCOs.
Both VCOs have these parameters.
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Arturia - User Manual PolyBrute - Voice Architecture
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