MIDI to LSDJ

A library to parse a Midi file using @tonejs/midi and convert a track from that file into an array of chains, phrases and notes for use with LSDJ.

Uses @tonaljs/note convert MIDI note values to notes and @tonaljs/core to calculate intervals between notes

Usage

import { readMidiFile, processTrack, processProject } from 'midi-to-lsdj';

function exampleUsage() {
  const midiData = readMidiFile('super-amazing-song.mid')
  const trackOneChains = processTrack(midiData.tracks[0], midiData.header.ticksPerBeat)
  const projectConfig = processProject(midiData)
  console.log(trackOneChains, projectConfig)
}

Features

The library offers the following features:

• [x] Time Signatures changes (adds a H00 command if numerator doesn't resolve to 16/16)
• [x] Triplets (Adds a table with delta between root note and the triplet notes)
• [x] De-duplication of Tables, Phrases and Chains
• [x] Tempo changes
• [x] Chords
• [x] Sweeps when notes are pitch-bent in file

Roadmap

• [ ] De-duplication across multiple tracks
• [ ] Drums
• [ ] Advanced de-duplication of Phrases making use of transpose
• [ ] LSDJ save file creation (so you don't need to enter it all by hand)
• [ ] Validation of Midi file to ensure that no more than 256 Tables, Phrases and Chains across the song