The world's most advanced spatial audio engine for the web. Seamlessly integrate high-performance 3D soundscapes into your applications with zero latency and native TypeScript support.
import { Echo } from '@echo/sdk';
const engine =new Echo.Engine();
const source =engine.createSource({
position: [10, 5, -2],
reverb: 0.8,
doppler: true
});
source.play(
'/assets/ambient_void.mp3'
);Lightweight and tree-shakeable for optimal bundle size.
Define exact coordinates with built-in physics simulation.
Instant spatial audio with zero configuration.
Fits into your existing workflow.
Everything you need to create beautiful, interactive experiences
Position sound nodes in a 360° field with our powerful spatial API.
Audio shifts pitch and resonance based on environmental velocity.
Granular control over frequency, oscillation, and dampening.
Built on Web Audio API for instantaneous feedback on any device.
Fully typed for better DX and seamless integration.
Free and open for everyone, powered by the community.
Processing Latency
Concurrent Sources
WASM Engine
Limited to left and right channels
Leveraging native HRTF algorithms to deliver 360° immersion through any standard pair of headphones.
Choose the plan that works best for you
Perfect for trying out
For serious creators
For large teams
Trusted by the engineers building the next dimension of the web
"Echo changed how we think about web audio. The spatial depth is unlike anything else."
"Zero latency and native TypeScript? It's a dream for our VR browser project."
"The API is so clean. We migrated our entire audio engine in a weekend."
"Finally, a spatial audio library that doesn't kill performance on mobile devices."
"The documentation is world-class. Integrated it into our game engine in under an hour."
"Echo's acoustic physics engine is terrifyingly realistic. Our users are blown away."
"Echo changed how we think about web audio. The spatial depth is unlike anything else."
"Zero latency and native TypeScript? It's a dream for our VR browser project."
"The API is so clean. We migrated our entire audio engine in a weekend."
"Finally, a spatial audio library that doesn't kill performance on mobile devices."
"The documentation is world-class. Integrated it into our game engine in under an hour."
"Echo's acoustic physics engine is terrifyingly realistic. Our users are blown away."