A voltage-controlled oscillator or VCO is an electronic oscillator whose oscillation frequency is controlled by a voltage input. The applied input voltage determines the instantaneous oscillation frequency. Consequently, modulating signals applied to control input may cause frequency modulation (FM) or phase modulation (PM). A VCO may also be part...
oscillator whose frequency is a function of the voltage of an input signal
An oscillator that changes its frequency according to a control voltage fed to its control input.
an analog circuit that generates a electrical waveform, such as a Sine, Saw or Square wave where the pitch is determined by a control voltage. VCOs are used by older analog synthesizers to generate the base sounds which are then altered by Voltage-Controlled Amplifiers and Voltage-Controlled Filters.