vimsynth/modules/vco

modules/sources/VCO

VCO

The main oscillator. Four waveforms, chosen with a knob — so its timbre cannot be modulated. Use WAVE when you want to sweep the timbre.

The VCO card as vimsynth draws it: its title bar, 4 knobs, 4 inputs down the left edge and 1 outputs down the right
VCO on an empty rack — 32×14 cells, knobs at their defaults. Press a in the app and pick VCO to get this card.

inputs

Down the left edge of the card, top to bottom.

v/octpitch
Pitch. 1.0 = one octave up.
fmcv
Frequency modulation, scaled by the fm amt knob. An LFO here at low depth is vibrato.
pwmcv
Pulse-width modulation. Only audible on the square wave, where it is the classic 'moving' string sound.
synctrigger
Hard sync: resets the oscillator's phase, forcing it to the frequency of whatever drives this. Aggressive, metallic.

outputs

Down the right edge, in the same order.

outaudio
The sound.

knobs

Left to right across the face — the dials in the picture.

tune-24 … 24 st= 0 st
Pitch offset in semitones.
wavesine · tri · saw · sqr= saw
The waveform. saw is bright and full (strings, brass, bass); sqr is hollow and reedy; tri is soft; sine is pure. A CHOICE — it cannot be modulated. Use WAVE if you need to sweep it.
pw0.02 … 0.98= 0.5
Pulse width. Only audible on sqr. Modulate it with an LFO for the classic slow-moving string sound.
fm amt0 … 1= 0
How far the fm input moves the pitch. Small values are vibrato; large values are clangorous FM.

more

The full reference — every parameter curve, the patching notes and the worked examples — lives in the manual: docs.vimsynth.com/modules/vco. In the app itself, :help VCO opens the same page without leaving the rack.