SoundPalette: MIDI SysEx Generator

This is the source code for SoundPalette, a tool for editing MIDI System Exclusive (SysEx) messages for the Roland SC-55 (Roland GS) and Roland SC-7 tone generators. SysExes can be used to customise effects and alter sounds.

※ SoundPalette is not a product of, affiliated with or endorsed by Roland Corporation.

Currently supports (as of v1.0.0):

• All Roland SC-7 exclusive messages.
• Most Roland GS messages supported by Roland SC-55 and Roland SC-55mkII. (Notable absences: drum map editing and voice/partial reserves.)

Future plans:

• More standard MIDI/General MIDI support.
• More Roland GS device support.
• Yamaha XG support.

Here are some things SoundPalette can do:

Use it directly in your browser. No download or install necessary. Try it out at https://hikari.noyu.me/etc/SoundPalette/! You can also download a release if you want, but it's a bit tricky to use as you may have to run a local web server.

Inspect a SysEx. Paste or type in a SysEx message to find out what it does.

Create a SysEx. Use drop-down menus to select which parameter you want to set, and what value to set it to. SoundPalette will generate a SysEx.

Copy a SysEx. Copy a SysEx to clipboard for pasting into a MIDI application.

Send SysEx over MIDI. Click a button to send a SysEx directly to a connected MIDI device. (Requires Chrome or Firefox.)

Test effects. SoundPalette can send simple note and control change data directly to a connected MIDI device, so you can easily test how a SysEx affects the sound. (Requires Chrome or Firefox.)

Collect SysExes. Build up a collection of different SysEx messages.

Export a MIDI file. Export the collection to a MIDI file, for importing into a MIDI application.

Inspect a MIDI file. Load a MIDI file to find out what SysEx messages it contains, and what they do.

Developer stuff

Standard Rust/Cargo project, no dependencies. cargo doc, cargo fmt, cargo test and cargo clippy are all tools you should use.

If you want to reuse the tables of SysEx data under a different licence for your own MIDI-related OSS project, or would like help adapting or testing this, please get in contact with me at my git email address.

Building the CLI tool

This tool exists just for testing right now and doesn't have most of the functionality of the web app.

cargo run will build and run it. You can pass arguments after a --, e.g. cargo run -- in.mid -o out.mid.

Building the web app

cargo build --target wasm32-unknown-unknown --lib

Then run a local web server by your favourite method, e.g.:

cd htdocs && php -S localhost:8000

Note that this relies on symlinks for the .wasm and .d files. You can use directly copy those files from target/wasm32-unknown-unknown/debug/ to htdocs/ instead, if needed.

Testing

cargo test

The tests are run as native code, not as WebAssembly.