“Unipolar” refers to a type of signal that has a voltage range that spans only positive or negative values but not both. Unipolar signals are commonly used for specific modulation purposes, like controlling the amplitude of a VCA (Voltage Controlled Amplifier), the brightness of an LED, or the position of a panning control.
For example, a unipolar signal could have a voltage range from 0V to +5V or 0V to -5V, depending on the specific module and signal type. The voltage range of a unipolar signal is in contrast to a bipolar signal, which has both positive and negative voltage values (e.g., -5V to +5V).
