MIDIController

A MIDIcontroller is a hardware or software device that generates and transmits Musical Instrument Digital Interface (MIDI) messages to control electronic musical instruments, sound modules, software synthesizers and digital audio workstations (DAWs). Unlike sound-generating instruments, most MIDI controllers do not produce audio themselves; they send performance data such as note on/off, velocity, pitch bend, aftertouch, and continuous controller (CC) messages.

Common types include keyboard controllers, pad controllers, wind controllers, guitar and bass MIDI pickups, foot controllers, and control surfaces with faders and knobs. Modern devices often provide assignable controls, transport buttons, and built-in interfaces for preset management. Controllers may support multi-channel and polyphonic expression via extensions such as MIDI Polyphonic Expression (MPE) to allow per-note expressive control.

MIDIcommunication originally emerged in the 1980s and has evolved to include DIN traditional five-pin connectors, USB-MIDI, Bluetooth Low Energy MIDI, and networked solutions. Configuration typically involves mapping controller outputs to parameters in hardware modules or software, enabling real-time manipulation of timbre, effects, and arrangement.

MIDIcontrollers play a central role in studio production, live performance, and sound design, enabling flexible interaction with virtual instruments and modular setups. They are produced by a range of manufacturers and vary widely in size, feature set and price, from compact mobile units to elaborate production control surfaces.