kamiyo / labs

a polyrhythm metronome

Programming Lab for Sean Chen Piano

This is a page for programming adventures in music and other subjects!

This (unnecessary) SPA is written in Clojurescript with the Shadow-cljs workflow and

• Reagent (React)
• Re-frame
• CLJS bach
• stylefy
• among others.

Installation

First make sure shadow-cljs is installed, preferrably globally, as these instructions assume the existence of the command shadow-cljs (I'm using yarn):

[yarn global add] shadow-cljs

While you're at it, also do

yarn [install]

First build worker.cljs for release, since that's not going to change often:

shadow-cljs release worker

Development

It's encouraged to start a shadow-cljs if you're going to be running shadow-cljs commands alot, since then you won't need to start a new JVM each time:

shadow-cljs start

Then, watch the app, which will also make a dev server capable of hot reloading:

shadow-cljs watch app

Once it's done, go to localhost:8080.

Release

Just run shadow-cljs release app!

Sub-Apps

The subapps are as follows.

Polyrhythms

This page is a polyrhythmic metronome. It allows you to generate accurate polyrhythms in various tempi. Uses the Web-Audio API and a webworker to schedule the ticks. Visit this blogpost to see details about what this is, why, and how.

TODO

• Either put a message about landscape being ideal, or make a vertical version
• Volume/Off controls (individual?)
• Multiple tracks?