This module is parsing midi files into a human-readable JSON object.
This module parses a binary MIDI file and turns it into a JSON representation. This JSON representation can then for example be used to pass it on to the midi-player. It can also be encoded again as a binary MIDI file using the json-midi-encoder.
This module is available on npm and can be installed by running the following command:
npm install midi-json-parserOnce the module is installed you can use its one and only function as shown in the example below:
import { parseArrayBuffer } from 'midi-json-parser';
// Let's assume there is an ArrayBuffer called arrayBuffer which contains the binary content of a
// MIDI file.
parseArrayBuffer(arrayBuffer).then((json) => {
// json is the JSON representation of the MIDI file.
});In case you are comfortable with TypeScript, this is the interface which describes the JSON representation:
interface IMidiFile {
division: number;
format: number;
tracks: TMidiEvent[][];
}The type
TMidiEvent
is a union of all possible MIDI events. Here is the complete list of all MIDI events this module can handle:
IMidiChannelPrefixEventIMidiChannelPressureEventIMidiControlChangeEventIMidiCopyrightNoticeEventIMidiDeviceNameEventIMidiEndOfTrackEventIMidiInstrumentNameEventIMidiKeyPressureEventIMidiKeySignatureEventIMidiLyricEventIMidiMarkerEventIMidiMidiPortEventIMidiNoteOffEventIMidiNoteOnEventIMidiPitchBendEventIMidiProgramChangeEventIMidiProgramNameEventIMidiSequencerSpecificEventIMidiSetTempoEventIMidiSmpteOffsetEventIMidiSysexEventIMidiTextEventIMidiTimeSignatureEventIMidiTrackNameEventIMidiUnknownTextEvent
Developing this module wouldn't have been possible without all the great resources out there. The following list tries to mention a few of them:
-
A detailed specification of the MIDI file format as HTML: Standard MIDI-File Format Spec. 1.1, updated and PDF: Standard MIDI-File Format Spec. 1.1, updated
-
A brief description of the MIDI file format: Outline of the Standard MIDI File Structure
-
A blog post about the timing information in MIDI files: Timing in MIDI files
-
An explanation of the concept called running status: Running Status
-
Actually a documentation for a Python library, but it also contains extensive information on MIDI messages itself: Mido - MIDI Objects for Python
-
Very detailed information on meta messages, but also on many other non MIDI related audio topics as well: RecordingBlogs.com Wiki
-
A JavaScript MIDI parser and synthesiser: jasmid - A Javascript MIDI file reader and synthesiser and its excluded parser: midi-file-parser
-
A complete MIDI app which also contains a parser: MIDI.js
-
A very similar parser but for Node.js only MIDI Converter
-
A parser for converting MIDI into a JavaScript object which can also turn it back into a binary MIDI file again: MIDIFile
![greenkeeper[bot] avatar](https://avatars.githubusercontent.com/in/505?v=4 "greenkeeper[bot]")
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent