These audio units trigger the sounds in their sound banks according to the MIDI messages coming from the keyboard.Īlthough it sounds futuristic, MIDI technology has been in our lives since 1983 and stayed almost the same until recently. Audio is produced by computers or hardware synths that are connected to the keyboard. This message is quite small in size and does not contain any audio information. In other words, a MIDI message basically includes information like which key you pressed, how long you pressed, and at what intensity you pressed. MIDI (Musical Instrument Digital Interface) is the name of the protocol that instruments use to communicate with each other or with computers (we can now add iOS devices to the list).
