MID 是什么？MID 格式完整指南

What is it?

MIDI (Musical Instrument Digital Interface) is a technical standard for digital communication between electronic musical instruments, computers, and audio equipment. Finalized in 1983 by a consortium of electronic instrument manufacturers, MIDI does not record actual audio waveforms. Instead, it stores musical performance data as a sequence of instructions: which note to play, how hard to press it, how long to hold it, and which instrument to use. A MIDI file is essentially the sheet music of a digital performance.

Because MIDI files store instructions rather than audio data, they are extraordinarily compact. A complete symphony containing thousands of notes and dozens of instrument parts might be only a few kilobytes as a MIDI file - compared to hundreds of megabytes as uncompressed audio. The actual sound you hear when playing a MIDI file depends entirely on the synthesizer or soundfont used for playback, which means the same MIDI file can sound like a cheap keyboard or a full orchestral recording depending on the playback hardware or software.

Technical Specifications

Pros & Cons

When to Use It

Here are the most common situations where MIDI is the right choice: