FFT Audio Analyser visuals ready for retina displays.

Note: Uses ResizeObserver. Polyfill it on your end.

API

$3

| Method | Description | Related media event |
| --- | --- | --- |
| set analyser | Set analyser to read data from. | |
| start() | Start the visuals drawing loop. | play |
| stop() | Stop the visuals drawing loop. | pause / ended |

| Attribute | Description |
| --- | --- |
| color | Sets the color of the visual. |

Usage

Install audio-visualiser via npm or import it in your ES module supported browser with import 'https://cdn.skypack.dev/audio-visualiser';

Create an AnalyserNode and connect it to by calling the setter analyser on the instance of the custom element. document.querySelector('audio-visualiser').analyser = yourAnalyserNode;. For a little live demo of this you can check out https://enjikaka.github.io/audio-visualiser/. Open dev tools or view-source to see how the

``html


`

`js
import 'https://cdn.skypack.dev/audio-visualiser';

const audio = document.getElementById('audio');
const visuals = document.getElementById('visuals');

audio.currentTime = 41;

const audioContext = new AudioContext();

const source = audioContext.createMediaElementSource(audio);
const analyser = audioContext.createAnalyser();

analyser.fftSize = 1024;

source.connect(analyser);
analyser.connect(audioContext.destination);

visuals.analyser = analyser;

audio.addEventListener('play', () => {
audioContext.resume();
console.log('playing');
visuals.start();
});

audio.addEventListener('pause', () => {
console.log('paused');
visuals.stop();
});
``