SLEEP AUDIO

Synthesised in your browser, for the small hours.

GENERATED ON DEVICE · NOTHING STREAMED

Rain, sea, wind, noise, a heartbeat — built from mathematics by the Web Audio engine the moment you press play, so there is nothing to license, buffer or download. Layer them, set the timer, and it fades away as you do.

THE MIXER

Silent. Choose a scene, or build your own mix below.

Filtered noise with a bright patter above it. Rain volume

Deep swell on an eight-second wave. Ocean volume

Flat to 20 Hz, no drift. Brown noise volume

Equal energy per octave. Pink noise volume

A wandering band with slow gusts. Wind volume

Warm floor, high canopy, distant calls. Jungle volume

A low hand-drum pulse at rest pace. Soft drums volume

Lub-dub at a resting sixty-eight. Heartbeat volume

SLEEP TIMER

Fades out over the final 90 seconds, then releases the audio session. For relaxation only — not a medical product.