SeqEx is a simple MIDI sequencer written in Elixir. It leverages midiex as well as the Phoenix LiveView to create a sequencer you can use on the browser, as well as enable other poeple to control it.
- Clone this project.
- Run
mix deps.geton the repository's root. - Run
mix phx.serverto start the server, you should now be able to accesshttp://localhost:4000on your browser.
If you wish to use the sequencer, you can access it through the Seqex.Sequencer module, for example:
alias Seqex.Sequencer
sequence = [:C3, :E3, :G3, :E3]
bpm = 120
# 1. Fetch MIDI output port where we are sending messages to.
[output_port] = :output |> Midiex.ports() |> List.first()
# 2. Start sequencer's GenServer.
{:ok, sequencer} = Sequencer.start_link(output_port, sequence: sequence, bpm: bpm)
# 3. Play the sequencer.
Sequencer.play(sequencer)Feel free to read the module's documentation, as well as the function's documentation to better understand its capabilities.
There's 3 live routes available in the project:
/sequencer– This is the UI for the sequencer, which allows you to set the sequence, tempo, note length, etc./playground/notes-listener– Simple app that listens to MIDI messages and displays the notes being played./playground/notes-listener-grid– Simple app that listens to MIDI messages and displays the notes being played as dots in a grid.