https://github.com/mk-pmb/midijssf-from-sf2-pmb

Utilities for converting soundfonts from .sf2 to MIDI.js format.
https://github.com/mk-pmb/midijssf-from-sf2-pmb

Last synced: about 1 month ago
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Utilities for converting soundfonts from .sf2 to MIDI.js format.

• Host: GitHub
• URL: https://github.com/mk-pmb/midijssf-from-sf2-pmb
• Owner: mk-pmb
• Created: 2017-08-21T02:31:33.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2017-09-25T14:45:15.000Z (about 7 years ago)
• Last Synced: 2024-10-02T11:17:32.141Z (2 months ago)
• Language: JavaScript
• Size: 42 KB
• Stars: 6
• Watchers: 4
• Forks: 0
• Open Issues: 2
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

• awesome-javascript-audio - midijssf-from-sf2-pmb - utilities for converting soundfonts to MIDI.js format (Sound assets / SoundFonts)

README

        


midijssf-from-sf2-pmb

=====================

Utilities for converting .sf2 wavetables to MIDI.js sound font format.

The space and lowercase "f" in "sound font(s)" is my attempt to help you

discern them from [the brand name](https://en.wikipedia.org/wiki/SoundFont).

Usage

-----

See the [`midijssf-timgm6mb-pmb`][tim6pmb] package for how to use this one.

Some hints:

* Beware that mono music usually won't survive the naive karaoke approach

  (`sox`: `oops` effect). If you try to save bytes this way, really compare

  the cost for each selected output format. Occasionally I have been surprised

  by how small a difference it made.

How it works

------------

* For each selected instrument (including percussion) and each MIDI note:

  * Make a MIDI file playing that note on that instrument.

    * If things work out, this is done only once when the package is installed,

      by running the `input-files.gen-all.js` script.

  * Let `fluidsynth` convert the MIDI to FLAC audio, using the configured

    `.sf2` wavetable.

    * WAV or AU seemed more efficient but caused problems with the plumbing.

  * Let `sox` convert the FLAC to WAV, and optionally trim trailing silence

    in the process.

  * Encode the samples to selected output formats (e.g. Vorbis, MP3)

    and compile them into bundles

    (MIDI.js sound font and/or Compact JSON WaveTable).

Template variables

------------------

Some options support variable. Their notation is `\v` (U+000B line tabulation)

followed by a single letter:

* `d`: config.destDir

* `B`: config.sf2basename

* `b`: config.sf2basename.toLowerCase()

* `F`: current output audio format ID

  * `f`: same but in lowercase

* `i`: current instrument ID (`001`…`128`, or `-10` for percussion)

* `I`: current instrument name (or config.chn10Name for percussion)

  * `s`: same but in snake_case

Known issues

------------

* needs more/better tests and docs

 

  [tim6pmb]: https://github.com/mk-pmb/midijssf-timgm6mb-pmb

License

-------

ISC