Yamaha Clavinova CVP-403 Basics

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MIDI Basics

1. What’s MIDI? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2. What You Can Do With MIDI. . . . . . . . . . . . . . . . . 2

3. MIDI Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

4. MIDI Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1. 

What’s MIDI?

MIDI is an acronym that stands for Musical Instrument Digital Interface,

 a technology that allows 

electronic musical instruments to communicate with each other, by sending and receiving performance infor-

mation.

Just what do we mean by “performance information”?

 Let’s consider what happens when a pianist per-

forms.

The pianist presses a key on a piano or presses a pedal.

These actions are instances of “performance information” and 

reflect how the pianist played the instrument. MIDI is used to 

capture and express this information electronically. When you 

strongly play middle C on a MIDI keyboard, MIDI indicates the 

key number as 60, and the strength of playing as 120, for exam-

ple. In this way, MIDI precisely describes your performance infor-

mation in digital form.

This performance information—MIDI data—can be 

transmitted

 between MIDI-compatible musical instruments, or 

saved as a file for later playback. No matter what instrument or 

computer you use, the MIDI data will reproduce the original per-

formance exactly the same. (Keep in mind that the actual sound 

of the performance may differ from instrument to instrument—

for example, the acoustic piano sound on one instrument may 

sound more full and rich than on another—but the basic perfor-

mance will be identical.)

The MIDI data saved as a file can easily be changed.

 For 

example, you can change an incorrectly played note to the cor-

rect one, change the song tempo, transpose the song to a desired 

key, etc. This feature of MIDI is very effective for creating a song 

or practicing with a musical instrument.