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What is Control Voltage?
The 0-CTRL does not create sound; instead it makes control voltage, signals that shape and affect the
sound created by whatever synthesizer you patch it to. A control voltage input typically applies the control
voltage, or CV, to its parameter as if the voltage is an “invisible hand” turning the control. For example,
increasing the level of the CV in an oscillator’s Pitch input causes the Pitch to go up. If you patch the 0-Ctrl’s
Pitch Channel Output to the 0-Coast Pitch (1v/oct) input, and start the clock running, you will hear the pitch
go up as the sequence reaches steps with higher values.
Although Control Voltage is often used to control Pitch (indeed, on many pre-MIDI non-modular
synthesizers, pitch was the only thing CV could control), it can also be used to control any other parameter
for which there is a CV input. For example, the Multiply circuit of the 0-Coast. If you patch the 0-Ctrl’s
Pressure CV output to the Multiply CV input, you can create dramatic timbral changes in the 0-Coast
waveform by pressing on a 0-CTRL touchplate.
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