midi@3:14 is a home-made electronic keyboard for playing music.
This repository contains an application that can record audio loops and that responds to MIDI control messages from midi@3:14.
See midi314-pcb and midi314-firmware for more information about the keyboard itself.
This program supports the following custom MIDI Control-Change events:
| Identifier | Event |
|---|---|
| 20 | Start recording a loop |
| 21 | Play a loop |
| 22 | Mute a loop |
| 23 | Delete a loop |
| 24 | Mute all other loops |
| 25 | Unmute all muted loops |
This crate uses rust-jack. It requires that you install Jack or Pipewire Jack using your package manager. On Fedora, I use:
sudo dnf install pipewire-jack-audio-connection-kit-devel
Build the program using this command from the root of the source tree:
cargo build --release
From the root of the source tree, start the looper:
./target/release/midi314-looper
In another terminal, start FluidSynth:
fluidsynth -p FluidSynth
In a third terminal, connect the keyboard to FluidSynth:
pw-link "Midi-Bridge:Arduino Leonardo:(capture_0) Arduino Leonardo MIDI 1" "Midi-Bridge:FluidSynth:(playback_0) FluidSynth"
Connect the MIDI input of the looper with the keyboard:
pw-link "Midi-Bridge:Arduino Leonardo:(capture_0) Arduino Leonardo MIDI 1" midi314-looper:midi_in
Connect the audio input of the looper to FluidSynth:
pw-link "PipeWire ALSA [fluidsynth]:output_FL" midi314-looper:audio_in_1
pw-link "PipeWire ALSA [fluidsynth]:output_FR" midi314-looper:audio_in_2
Connect the output of the looper to your system audio output.
You can use pw-link -i to get the actual port names for your system:
pw-link midi314-looper:audio_out_1 alsa_output.pci-0000_00_1b.0.analog-stereo:playback_FL
pw-link midi314-looper:audio_out_2 alsa_output.pci-0000_00_1b.0.analog-stereo:playback_FR