How background noise helps you sleep
It's rarely sound itself that wakes you. It's a change in sound: a door closing, a car passing, a partner snoring, a dog barking down the street. A steady background noise raises the quiet baseline of the room, so those sudden sounds become a smaller jump and are less likely to pull you out of sleep.
It also gives a busy mind something plain and unchanging to settle into, and over time the sound becomes a cue that it's time to sleep.
To be honest about the evidence: research on noise and sleep is mixed, and most studies are small. The clearest benefit is masking disruptive sounds in noisy places like cities, shared housing and hospital wards. You may have seen headlines about pink noise and deep sleep. Those studies mostly played short bursts of sound timed to sleeping brain waves in a lab, which is different from leaving a noise on all night. So treat background noise as a simple, low-risk thing to try rather than a guaranteed fix.
Which noise should you choose?
- Brown noise is the one most people find easiest to sleep to. Its deep, low rumble is like heavy rain or a distant waterfall, and it covers traffic and low hums well.
- Pink noise sounds like steady rain. It sits between brown and white, so it's a good choice if brown feels too heavy.
- White noise masks the widest range of sounds, including sharp, high ones like voices. Some people find its hiss harsh at night. Grey noise is a softer version that's easier on the ears.
- Green noise focuses on the middle frequencies, giving a gentle, nature-like hush. It's good if you mainly want something calming rather than heavy masking.
No single colour is best for everyone. Start with brown, and if it doesn't suit you after a few nights, try pink.
Suggested settings
Open any noise page and use the Sound Controls panel. These are good starting points for sleep:
Keep the volume low
Sleep noise should be quieter than you might expect. A good rule: it should be softer than a normal conversation. If you'd have to raise your voice to talk over it, it's too loud. Hours of loud sound every night isn't good for your hearing.
For babies and young children, keep the speaker well away from the cot and the volume low. Tests of infant sleep machines have found that some can get louder than recommended limits when placed close by at full volume.
Practical tips
- Keep the page open. Everything plays in your browser. On phones, locking the screen or switching apps can pause the sound. If that happens, try a tablet or laptop, or leave the phone on charge with the screen dimmed.
- Use a speaker rather than earbuds for all-night listening. If you need headphones, soft sleep headphones are more comfortable than earbuds.
- Use the timer if you only need help dropping off. Set it to 30 or 45 minutes with long fades so the sound eases out after you're asleep.
- Run it all night if silence wakes you. Some people notice when the noise stops. If that's you, set the timer to Off.
- Give it a week. A new sound can feel odd for the first few nights. It works best as a consistent part of your bedtime routine.
Common questions
Is it OK to sleep with noise on all night?
For most people, yes, as long as the volume is low. If you find you sleep well with it, there's no need to switch it off.
White, pink or brown: which is best for sleep?
There's no clear winner in the research. Brown and pink are usually more comfortable for sleep because they have less high-pitched hiss. White is the strongest at covering voices and sharp noises.
Can background noise help with tinnitus at night?
Some people find a steady sound makes ringing in the ears less noticeable when they're trying to sleep. If your tinnitus is new, one-sided or getting worse, talk to a GP or audiologist.