MIDI Feathered Chords

A web app to feather notes played over any and all MIDI inputs, outputting to a device of your choice.

Similar to the Seldon Black software Bear McCreary used for the Foundation soundtrack, though developed independently and originally producing notes via L-systems. I do not watch a lot of television, and loved the Asmiov books when I read them 40-odd years ago, so it took me a while to even hear of the Foundation series, let alone watch it. Must do better.

• To help with loopback, input and output channels can be different.

• Current settings are restored on reloading

• Settings can be saved and restored through the Load and Save buttons.

• Contains some novelty visualisations and a novelty interactive on-screen keyboard.

Demo requires a Web MIDI API connection, not a MIDI-over-USB connection.

Installation

bun install

Run/Dev

bun run dev

Dependencies Lock File

GitHub Actions does not support a Bun lockfile, so an NPM lockfile is included. Ugh.

To Do

Touch a lamp above/below each range slider to toggle MIDI learn for that end of the range slider.

States

• Off
• • Mode: By-passed
• • Meaning: No CC associated with that end of this range
• • Action: activate to enter 'MIDI Learn' moder, restoring any previous value as default
• Flashing
• • Mode: MIDI Learn
• • Meaning: the next used CC will be assigned to this end of this range and the mode will be set to 'Active'
• • Action: de-activates 'MIDI Learn' mode
• Solid, unblinking
• • Mode: Active
• • Meaning: the specified CC (displayed by the lit lamp) controls this range of this control
• • Action: Enter 'By-passed' mode

That is, to link a controller to the end of a range, click to ilght a lamp and enter 'MIDI Learn' mode, then activate a controller to assign it. To deactive, click the same lamp again. To reactivate or relearn, click the lamp again.

About

A small application using Vite, React, Jotai, Web MIDI, mainly to compare React/Jotai to Vue3/Pinia.

To Do

• Support sustain pedal