White Noise & Ambience
Mix white, pink and brown noise with rain, fan and ocean ambience for focus or sleep. Every sound is synthesized live on your device — no audio files, no streaming, no upload.
Sound generation isn’t available here
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Sleep timer
The mix fades out gently over the last 15 seconds, then stops. Keep this tab open while playing — pin it if you like; some phones pause audio in background tabs or when the screen locks.
Export your mix as WAV
Renders the sounds that are currently playing, at their current volumes, into a downloadable 16-bit stereo WAV (~10 MB per minute). Loop it in any player.
No samples, no streaming — pure synthesis
Ambience sites usually stream big audio loops from a server. Here, white noise is a buffer of cryptographically random samples; pink and brown run that randomness through filtering integrators so the energy shifts toward lower frequencies; rain is band-passed noise sprinkled with randomized droplet blips; the fan is a low hum plus band-passed noise with a blade-rate wobble; and the ocean swells with slow LFOs on gain and filter. It all runs through the Web Audio API on your device — private, offline-capable, and free.