Audio

Noise generator

Brown, pink, and white noise for sleep, focus, and relaxation. No account — runs entirely in your browser.

Volume

60%

Sleep timer

hours

minutes

No timer set

100% private. All processing happens locally in your browser — no files or data are ever sent to a server.

How to use Noise generator

01 Choose a noise type: Brown (default), Pink, or White
02 Click Play to start — audio begins immediately, no upload needed
03 Adjust volume and optionally set a sleep timer to auto-stop

Frequently asked questions

Common questions about Noise generator.

Is Noise generator free to use?

Yes, Noise generator is completely free. No account, subscription, or payment is ever required — just open the page and start using it.

Does Noise generator upload my data to a server?

No. Noise generator runs entirely in your web browser using client-side JavaScript. Your files, text, and data never leave your device, making it 100% private.

Can I use Noise generator on my phone or tablet?

Yes. Noise generator is fully responsive and works on all modern smartphones, tablets, and desktop browsers without installing any app.

Does the noise generator work offline?

Yes. Once the page has loaded, the noise generator runs entirely in your browser using the Web Audio API. No files, no uploads, and no internet connection is needed after the initial page load.

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About Noise generator

The Noise Generator produces brown, pink, and white noise using only the Web Audio API — no files, no uploads, no external libraries. White noise has equal energy at all frequencies (bright, static-like). Pink noise has energy decreasing as frequency increases (1/f), producing a softer, more natural sound. Brown noise decreases even more steeply (1/f²), creating a deep, rumbling quality ideal for sleep and focus. All three types are generated in real time in your browser. Use the volume slider and optional sleep timer to tailor the experience. A calm waveform visualiser provides gentle feedback while playing. Everything runs locally; nothing is uploaded to any server.