White noise, brown noise, pink noise, and more — generated directly in your browser. No download, no subscription, no ads during playback.
⬜
White Noise
Equal energy at all frequencies. Masks distractions.
🌸
Pink Noise
Softer than white. Like steady rainfall. Deep sleep.
🟫
Brown Noise
Deep, rumbling. Like thunder or distant ocean.
🔵
Blue Noise
Bright, hissy. Like a shower or high wind.
🟣
Violet Noise
Crisp, sharp. Helps tinnitus masking.
🌧️
Rain Noise
Modulated pink noise. Mimics gentle rainfall.
Soundscape presets:
🎛 Mix Two Sounds
A 50%B 50%
Select a noise type above
Paused
Volume70%
Sleep timer:
Which noise should I use?
⬜
White noise is the most researched for sleep. It contains equal energy across all frequencies, creating a consistent "shhhh" that masks unpredictable environmental sounds like traffic, footsteps, or snoring. Best for light sleepers in noisy environments.
🌸
Pink noise has more energy in lower frequencies — it's softer and more natural-sounding than white noise. Research has linked pink noise to improved deep sleep and memory consolidation. Most people find it more comfortable for extended listening than white noise.
🟫
Brown noise (also called red noise) is the deepest and warmest. It sounds like distant thunder or a rumbling river. People with ADHD often find brown noise uniquely effective for focus. Great for meditation, deep relaxation, or if white noise feels too harsh.
🌧️
Rain noise is pink noise with amplitude modulation — it mimics the irregular rhythm of actual rainfall. The slight variation prevents the brain from habituating to it the way it does with perfectly constant sounds. Often the most pleasant for falling asleep.
💡
Set the sleep timer so the sound fades automatically. This is better than falling asleep with it running all night — most sleep researchers suggest 30–60 minutes is sufficient to help you fall asleep without needing it continuously.
Frequently Asked Questions
Is white noise or brown noise better for sleep? ▾
Both are effective, but for different reasons. White noise is better studied for masking sudden sounds that cause sleep disruptions. Brown noise is preferred by many for its deeper, warmer quality — especially by people with ADHD or anxiety. Pink noise sits between the two and has the strongest research support for improving deep sleep quality. Try each for a few nights and compare how you feel in the morning.
Is it safe to listen to noise all night? ▾
At moderate volume (around 50–65 dB), listening all night is generally safe. However, high volumes over extended periods can cause auditory fatigue. Most sleep researchers suggest using a sleep timer so noise plays for 30–60 minutes to help you fall asleep, then stops. If you do use it all night, keep the volume low — you should be able to have a normal conversation over it.
Can noise help with tinnitus? ▾
Yes — noise masking is one of the most effective approaches to managing tinnitus. White noise, pink noise, and especially violet noise can partially mask the ringing frequency. Many audiologists recommend dedicated sound therapy for tinnitus — playing noise at just below the tinnitus level so it's present but not overwhelming. This tool is suitable for casual masking; for clinical tinnitus treatment, consult an audiologist.
How is the noise generated? Is it recorded audio? ▾
No recordings are used. All noise is generated algorithmically in real time using the Web Audio API — a built-in browser technology. White noise is generated from random number sequences; pink and brown noise are created by applying different filter curves to that random signal. Rain noise adds amplitude modulation. This means the sound never loops, never has artefacts, and continues as long as the tab is open.
Does this work on mobile? ▾
Yes — this generator works on any modern device including iOS and Android. On mobile, your screen may dim or turn off while the noise continues playing (audio continues in the background on most devices). To prevent your device from cutting audio, set it to Do Not Disturb and keep the browser tab active. For overnight use, keep your phone plugged in as audio generation uses a small amount of battery.
What is the difference between white, pink and brown noise?
White noise contains all frequencies equally — it sounds like static. Pink noise emphasises lower frequencies with a softer, more natural sound like rainfall. Brown noise has even more bass, resembling deep rumbling or strong wind. Most people find pink or brown noise more pleasant for sleep.
Does sleep noise actually help you sleep?
Research supports white and pink noise as sleep aids — they work by masking sudden sounds that might wake you (traffic, snoring, notifications). Pink noise in particular has been shown in studies to improve slow-wave deep sleep and next-day memory consolidation.
Is it safe to play sleep noise all night?
Yes, at a safe volume. Keep the volume at or below 65 dB — roughly the level of a normal conversation. Louder volumes can cause hearing fatigue over time. Most people set sleep sounds to a comfortable background level rather than the loudest setting.