Peaks.js

Peaks.js is a JavaScript library that allows you to display and interaction with audio waveforms in the browser.

It was developed by BBC R&D to allow audio editors to make accurate clippings of audio content. You can read more about the project here.

Demo pages

The following pages demonstrate various configuration options:

Precomputed Waveform Data | Web Audio API | Single Zoomable Waveform | Single Fixed Waveform | Cue Events | Changing the Media URL | Multi-Channel Waveform

Demo: Changing the Media URL

This demo shows how to change the media URL and update the waveform.