An
oscillator in an analogue synthesizer
which changes its frequency according to changes in a control voltage.
Standard
is usually 1 volt = change of one octave.
VCOs
may have:
outputs:
various waveforms: sine, pulse, triangle,
sawtooth
output
controls: for coarse and fine frequency, wave
shape (such as pulse width) and output level as well as
inputs:
synchronization to another oscillator, pulse
width (for pulse width modulation) and frequency modulation
input
controls: for control voltage attenuation,
synchronization to another oscillator, and frequency modulation. |