White Noise Generator
Block distractions. Focus. Sleep better.
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Noise Type
Frequently Asked Questions
What is white noise and how does it work?
White noise contains all audible frequencies at equal intensity — like a TV static hiss. It creates a consistent sound mask that blocks out sudden noises (voices, traffic, doors) that would otherwise distract or wake you. Your brain perceives it as "nothing important" and tunes it out.
What is the difference between white, pink, and brown noise?
White noise has equal energy at all frequencies — it sounds like a sharp hiss. Pink noise reduces higher frequencies so it sounds softer and more natural, similar to steady rainfall. Brown noise reduces them even further, producing a deep rumble like ocean waves or a strong fan — many people find it the most soothing.
Is it safe to sleep with noise playing all night?
Yes, at moderate volume (under 70 dB — roughly conversational speech level). Keep the volume low enough that you could hold a normal conversation over it. The sleep timer lets you auto-stop after 15–90 minutes if you prefer it only during the falling-asleep phase.
How does this help with tinnitus?
Tinnitus masking works by adding a broadband sound that partially or fully covers the ringing frequency. White and brown noise are commonly recommended by audiologists for masking because they span the full frequency spectrum. This does not treat tinnitus — it temporarily reduces perceived loudness.
Does this use a lot of battery or CPU?
No. The Web Audio API generates noise algorithmically using your device's audio hardware — CPU usage is minimal and comparable to playing a music track. The generator runs entirely in your browser with no server requests after the page loads.
What are binaural beats and why aren't they here?
Binaural beats require stereo headphones and play two slightly different frequencies in each ear (e.g. 200 Hz left, 210 Hz right) — your brain perceives a 10 Hz "beat". The scientific evidence is mixed. We kept this tool focused on the well-established white/pink/brown noise use cases.
Pro Tips
- • Brown noise works best for deep focus work — try it for 25-minute Pomodoro sessions.
- • Keep volume at 40–50% — loud enough to mask distractions, quiet enough to avoid fatigue.
- • Use the 30-minute sleep timer so noise stops after you fall asleep.
- • Pink noise most closely mimics natural sounds like rain — good for relaxation.
- • Keep this tab pinned — audio continues while you work in other tabs.