White Noise Generator — Free Focus, Sleep & Relaxation Sounds

Steady noise masks distracting sounds — it helps people focus, fall asleep, and calm a noisy room. This generator creates real white, pink, and brown noise with the Web Audio API, right in your browser: no audio files, no downloads, no app install. Pick a sound, set the volume, add a sleep timer, and let it play. The sound is synthesized live on your device — nothing is streamed or uploaded.

How it works

Press Play Noise and your browser synthesizes sound live with the Web Audio API: white noise is pure random samples; pink noise runs those samples through the Paul Kellet filter bank so energy falls as frequency rises; brown noise integrates the samples for a deep rumble. The two-second buffer loops seamlessly, volume fades in gently, and the optional sleep timer stops playback automatically. No audio is streamed, downloaded, or uploaded.

Everyday uses

• Focus — mask office chatter and street noise while you work.
• Sleep — steady sound covers the creaks and traffic that wake you.
• Babies — continuous noise soothes infants and covers household sounds.
• Reading and study — a neutral backdrop without lyrics to distract you.
• Tinnitus relief — background noise makes ringing less noticeable for many listeners.