MIDI
electronic musical instrument industry specification / From Wikipedia, the free encyclopedia
MIDI (/ˈmɪdi/; Musical Instrument Digital Interface) is a technical standard. It describes a communications protocol, digital interface, and electrical connectors. It connect a large variety of electronic musical instruments, digital devices for playing, editing, and recording music.[1]
A MIDI recording is not an audio signal. It is more like a piano roll, identifying the pitch, start and stop time and other properties of each individual note.[2]
The personal computer market stabilized at the same time,[3][4] popularizing the MIDI format, and helped computers become a viable option for music production.[5]