Calculate bpm from a raw audio stream. pure js. non blocking.
Install with npm
$ npm install bpm.js
var bpmSink = require('bpm.js')
var spawn = require('child_process').spawn
createAudioStream("track.mp3")
.pipe(bpmSink())
.on("bpm", function(bpm){
console.log("bpm is %d", bpm)
});
// needed to convert mp3 to proper format
function createAudioStream(filename) {
var sox = spawn("sox", [filename, "-t", "raw", "-r", "44100", "-e", "float", "-c", "1", "-"])
return sox.stdout;
}
This source code was human-transpiled from the C version here:
http://www.pogo.org.uk/~mark/bpm-tools/
GPLv2
FAQs
Calculate bpm from raw audio
The npm package bpm.js receives a total of 2 weekly downloads. As such, bpm.js popularity was classified as not popular.
We found that bpm.js demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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