Definition & Meaning of "MIDI controller"

What is a "MIDI controller"?

A MIDI controller is a device used to send musical data to other electronic instruments or software via MIDI (Musical Instrument Digital Interface) signals. It typically features keys, knobs, sliders, and pads that allow musicians to control and manipulate virtual instruments, effects, and other sound parameters. MIDI controllers are used in music production and performance to create and adjust sounds, sequences, and recordings, offering a hands-on way to interact with digital music tools.