MIDI(Musical Instrument Digital Interface) A standard protocol for the interchange of musical information between musical instruments, synthesizers and computers. MIDI was developed to allow the keyboard of one synthesizer to play notes generated by another. It defines codes for musical notes as well as button, dial and pedal adjustments, and MIDI control messages can orchestrate a series of synthesizers, each playing a part of the musical score. MIDI Version 1.0 was introduced in 1983.
Benefits of MIDI
MIDI is a technology that represents music in digital form. Unlike other digital music technologies such as MP3 and CDs, MIDI messages contain individual instructions for playing each individual note of each individual instrument. So with MIDI it is actually possible to change just one note in a song, or to orchestrate and entire song with entirely different instruments. And since each instrument in a MIDI performance is separate from the rest, its easy to "solo" (listen to just one) individual instruments and study them for educational purposes, or to mute individual instruments in a song so that you can play that part yourself.
Record and edit your performance
A MIDI Sequencer can record your performances for listening at a later time, and even save your performance in Standard MIDI File format for playback on other MIDI systems. A MIDI Sequencer is a great way to evaluate your own progress, or even to study how someone else plays.
Better yet, because all MIDI data is editable, you can edit out any imperfections! If you play a wrong note, you can just change it using the Sequencer's editing tools. And if you find you just can't play fast enough to keep up with the tempo, you can slow it down for recording and speed it back up for playback -- without the "Mickey Mouse" effect that normally comes from speeding up a song.
Play any instrument
When you use MIDI to make music, you aren't limited to playing just one instrument. No matter what sort of MIDI Controller (keyboard, guitar, wind, drums, etc.) you actually use, you can make it sound like just about any instrument you can imagine (and some that are only in your imagination). Most digital pianos and other MIDI instruments come with hundreds of different sounds (pianos, trumpets, violins, guitars, basses and more) which you can play yourself or play via a MIDI sequencer to create fully orchestrated music.
As an introduction to the new Multimedia Project articles MIDI stores musical information in a message format. A typical message consists of a single status byte followed by data bytes. Items such as Note on, Note off, Note number to be played and the key pressure are part of the information that is stored as MIDI data
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