node-pitchfinder/test-addon.js

A pitch-detection library for node (using C++ Addon)

const Pitchfinder = require('./index')

const sine = []
const fs = 47000
const f = 440
const bufferSize = 1024

for (let i = 0; i < bufferSize; i++) {
  sine.push(100 * Math.sin(2 * Math.PI * f / fs * i))
}

const yinJs = Pitchfinder.YIN({ sampleRate: fs })
console.time('JS')
let pitch
for (let i = 0; i < 1000; i++) {
  pitch = yinJs.getResult(sine)
}
console.timeEnd('JS')
console.log(pitch, 'err: ' + (440 - pitch.pitch))

const macLeod = Pitchfinder.MacLeod({ bufferSize: 2048, sampleRate: fs })
console.time('Addon')
for (let i = 0; i < 1000; i++) {
  pitch = macLeod.getResult(Float64Array.from(sine))
}
console.timeEnd('Addon')
console.log(pitch, 'err: ' + (440 - pitch.pitch))