How to play multiple sounds at once with howler.js?

Use the play method on a Howl instance to get unique sound IDs, then control each sound individually. For example, sound.play() returns an ID that can be passed to methods like volume() or fade(), allowing simultaneous playback of multiple sounds or sprites.

Howler.js vs Tone.js for web audio?

Howler.js is best for reliable playback and cross-browser compatibility with a simple API, ideal for games and sound effects. Tone.js excels in music synthesis and advanced audio processing, so choose based on whether you need playback control or creative audio manipulation.

How to handle audio on mobile devices with howler.js?

Enable autoUnlock to automatically unlock audio on touch events, or listen for the 'unlock' event after a playerror. Set html5 to true for streaming, and avoid autoplay without user interaction due to browser restrictions.

Can howler.js stream live audio?

Yes, by setting the html5 option to true, howler.js can stream audio files using HTML5 Audio, which is useful for live audio or large files that shouldn't be fully downloaded before playback, as mentioned in the streaming example.

How to create sound sprites with howler.js?

Define sprites in the options with offsets and durations in milliseconds, then play them by name. Use tools like audiosprite to generate compatible sprite files, and specify the sprite property in the Howl configuration for efficient audio management.

Does howler.js support audio visualization?

No, howler.js focuses solely on playback control and does not include built-in visualization features. For visualization, you would need to integrate with the Web Audio API directly or use another library alongside howler.js.

Open-Awesome

Howler.js

MITJavaScriptv2.2.4

A JavaScript audio library that defaults to Web Audio API and falls back to HTML5 Audio for reliable cross-platform sound.

Visit Website GitHub

25.3k stars2.3k forks0 contributors

What is Howler.js?

howler.js is a JavaScript audio library that provides a unified API for playing and manipulating sound on the web. It solves the problem of inconsistent audio support across browsers by defaulting to the Web Audio API and falling back to HTML5 Audio, ensuring reliable playback everywhere. It handles complex audio needs like sprites, spatial sound, and group control with a simple interface.

Target Audience

Web developers and game creators who need reliable, cross-browser audio playback without dealing with low-level API differences or browser quirks.

Value Proposition

Developers choose howler.js because it offers a single, consistent API for all audio tasks, abstracts away platform-specific issues, and includes advanced features like sound sprites and 3D audio—all in a lightweight, dependency-free package.

Overview

Javascript audio library for the modern web.

Use Cases

Best For

Adding background music and sound effects to web games
Building interactive audio players with cross-browser support
Implementing sound sprites for efficient audio management
Creating immersive experiences with 3D spatial audio
Developing audio-rich educational or entertainment web apps
Streaming live or large audio files with HTML5 Audio fallback

Not Ideal For

Real-time audio synthesis applications requiring direct Web Audio node manipulation
Projects needing server-side audio processing or playback without client-side JavaScript
Advanced audio editing software with complex mixing and effects beyond volume/panning control
Environments where the absolute smallest footprint is critical, as even the 7kb core might be overkill for minimal audio needs

Pros & Cons

Pros

Cross-Browser Reliability

Automatically uses Web Audio API when available and falls back to HTML5 Audio, handling environment-specific bugs and ensuring consistent playback across all major browsers, including IE9+ and mobile Safari.

Lightweight and Modular

Core bundle is only 7kb gzipped with no dependencies, and optional plugins like spatial audio allow for extended functionality without adding unnecessary bloat, as highlighted in the features.

Comprehensive Audio Control

Provides fine-grained control over playback with methods for volume, rate, seek, fading, looping, and supports sound sprites for efficient loading and management of multiple sounds.

Spatial Audio Support

Includes a plugin for 3D spatial sound and stereo panning, enabling immersive audio experiences in games and interactive apps, as detailed in the spatial audio section.

Cons

Mobile Playback Hassles

Audio on mobile browsers is locked until user interaction, requiring workarounds like auto-unlock and event handling, which can complicate implementation and lead to inconsistent behavior.

Limited Low-Level Access

Abstracts away the Web Audio API, so developers needing direct access to audio nodes for custom effects or advanced processing may find it restrictive compared to libraries like Tone.js.

Documentation Overload

While comprehensive, the documentation is dense with numerous events and methods, making it challenging for beginners to quickly find solutions without deep diving into specifics.

Frequently Asked Questions

Related Projects

Vue

This is the repo for Vue 2. For Vue 3, go to https://github.com/vuejs/core

Stars209,881

Forks33,861

Last commit1 year ago

Bootstrap

The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web.

Stars174,308

Forks78,849

Last commit21 hours ago

electron

:electron: Build cross-platform desktop apps with JavaScript, HTML, and CSS

Stars121,570

Forks17,247

Last commit23 hours ago

Bring data to life with SVG, Canvas and HTML. :bar_chart::chart_with_upwards_trend::tada:

Stars113,031

Forks22,720

Last commit11 days ago

Community-curated · Updated weekly · 100% open source

Found a gem we're missing?

Open-Awesome is built by the community, for the community. Submit a project, suggest an awesome list, or help improve the catalog on GitHub.

Submit a project Star on GitHub