scrapjs/audio-spectrum

Draw spectrum of audio data

audio-spectrum

Show spectrum of audio data.

Usage

let context = require('audio-context')()
let spectrum = require('audio-spectrum')()
let generate = require('audio-generator')(Math.random, {duration: 4})
let write = require('web-audio-write')(context.destination, {channels: 1})

function tick () {
  let buf = generate()
  write(buf, tick)
  spectrum(buf)
}
tick()

API

let showSpectrum = Spectrum(options)

Create spectrum visualizer function with showSpectrum(data) signature. options may include channel to pick the channel to show and every option for gl-spectrum.

Analogs

• frequency-viewer — show spectrum in browser.
• sillyscope — oscilloscope and spectrogram in chromeless chrome.