MIDI is "Music Instrument Digital Interface" (English: Musical Instrument Digital Interface, MIDI for short)

MIDI is an industry standard electronic communication protocol for electronic musical instruments and other performance equipment (such as Synthesizer) defines various notes or playing codes, allowing electronic musical instruments, computers, mobile phones or other stage performance equipment to connect, adjust and synchronize with each other to exchange performance data in real time.

MIDI does not send sound, only data such as pitch and musical intensity, control signals for parameters such as volume, vibrato and phase, and clock signals to set the rhythm. On different computers, the output sound also varies depending on the audio source.

MIDI Performance Control Protocol is an industry standard for MIDI, formulated by the MIDI Industry Association in 1991. It allows different types of media control devices to communicate with each other, and can perform on-site performance control functions and entertainment applications with the help of computers. Like Music MIDI, MSC does not transmit the actual displayed media, it simply transmits instructions regarding multimedia performance.

Nearly all recording projects now use MIDI as a key open technology to record music. In addition, MIDI is also used to control hardware including recording equipment, such as stage lights, effect pedals and other high-performance equipment. In the past ten years, MIDI has entered the field of mobile phones. MIDI is used to play ringtones from mobile phones that support MIDI. MIDI can also provide background music for some electronic games and computer games.

MIDI enables computers, synthesizers, sound cards, and electronic musical instruments (electronic drums, electronic keyboards, etc.) to control each other and exchange messages. Today's computer sound cards are all MIDI-compatible and can realistically simulate the sound of musical instruments. Many music file formats are built on MIDI files. These formats can be said to be the electronic music scores that electronic musical instruments read, so usually a file only needs a few dozen KB to allow electronic musical instruments to play a complete piece of music.

Extended information:

Advantages——

1. The MIDI standard protocol was created in the early 1980s and is useful for musicians, recording musicians, and music lovers. There are several significant advantages.

2. Universal language and grammar: keyboard instruments, electronic drums, computers, arrangers and other electronic instruments with special functions designed for MIDI can be easily linked to each other

3. Simplified links: reducing the complexity of wires and signal line connections between music equipment (such as volume control)

4. Fewer performers: In the early 1980s, music performers Only one or two people can perform live performances and operate several MIDI devices at the same time to create a performance like a symphony orchestra

5. Lower acquisition threshold: users can create at less cost, Edit and produce high-quality digital music. Professional musicians can record by themselves at home without having to spend money to rent a recording studio or hire a bunch of musicians to help record. At the same time, fans with no musical background can use the highly scalable MIDI music software to make high-quality recordings.

6. Convenient and portable electronic music equipment: It greatly reduces the number of musical instruments, equipment and wires that musicians need to carry when touring. It is also much simpler to transport, load and set up equipment, but it is It can still produce comparable sound and effects.

Baidu Encyclopedia-MIDI