How to Use Brown Noise for Sleep: Volume, Timer & Setup
Brown noise is a deep rumble, so at night it does one job well: it covers other deep rumbles, like a road outside the window or a boiler that kicks on at 2 a.m. To use it for sleep, play it through earbuds or a small speaker a few steps from the bed, raise the volume only until the rumble stops pulling at you, and pick a timer that matches how long the noise lasts. The player here is free in a browser, with no ads and no account, so you can test all of that tonight. What brown noise won’t do is make you sleepy, and it barely touches a conversation through the wall.
What brown noise is good for
People land on this page because something deep keeps waking them, usually traffic that never fully stops or bass coming up from the apartment below. Brown noise helps with that because it’s the same kind of sound, a heavy even roar with almost nothing bright in it. Once it’s playing, the rumble outside stops standing out, because the room it has to compete with is no longer silent.
If you’ve never heard it, it’s closer to the noise inside a plane than to a running faucet. White noise is the bright, hissy one, and pink noise sits between the two. The sound called Brown Noise here is the deep cut of it, and it’s the one Slo listeners play more than anything else on the site.
There are two things it doesn’t do. It never cancels a sound, it only covers it, so the truck is still out there and a closed window or a pair of earplugs may beat any recording you play. And it isn’t a sleep aid in the medical sense. Researchers pooled the studies on steady sound and sleep in 2021, found the results going both ways, and rated the quality of the evidence very low (Riedy et al., 2021). So give it about a week and judge it by how often you wake in the night.
What to play brown noise through
The part of the setup that matters most is what the sound comes out of. A phone speaker is too small to produce deep sound at all, so brown noise from a bare phone arrives as a thin hiss with the rumble missing, and the rumble is the part you came for. Borrow anything else in the house and you’ll hear the difference in a second.
| What you play it on | How it goes |
|---|---|
| A small bluetooth speaker | The easy answer for most bedrooms. Put it on the floor or a low shelf a few steps away, not beside your head |
| Flat sleep earbuds | Thin enough to lie on, and they keep the room quiet for a partner. Keep the level gentle if they’re staying in until morning |
| A bedside sound machine | A small speaker in a box, which is fine. Check it has a brown setting and not only white |
| Your phone’s speaker | Gives you the hiss and drops the rumble, so it’s the one thing to work around |
| A laptop | Better than a phone, short of a real speaker |
Whatever you use, put it where you can reach the volume without sitting up, so you can nudge it down at one in the morning.
How loud should brown noise be?
Set the level while the noise you’re covering is actually happening. A volume you choose in a quiet bedroom at ten o’clock will be too low once the street gets going, and then you’re awake at one, fiddling with your phone.
Start lower than feels useful and raise it a step at a time. Stop at the first level where the rumble stops grabbing your attention. You’ll still hear the road if you go looking for it, and that’s the right place to be, because past that point you’re only adding noise on top of noise. A passing truck is louder than your speaker, so turning it up won’t cover the truck. It only adds more noise to the room.
Ignore the decibel targets people quote. Phone meter apps disagree with each other, and what counts as a safe level depends on how close the sound is and how many hours it runs. The World Health Organization’s noise guidance asks for quiet bedrooms overall, which is an argument for the lowest level that does the job (WHO noise guidance).
Four checks, made lying where you actually sleep:
- You can talk to someone in the room without lifting your voice.
- Nothing is sitting close to one ear.
- Your alarm still cuts through it. Play the alarm once over the noise and make sure.
- No ringing or fullness in your ears in the morning. If there is, it was too loud.
Where to put the speaker
Put the speaker between you and the noise, not between you and your pillow. For street noise that usually means near the window, on the floor or a low shelf, so it meets the sound before the sound reaches the bed. You get the cover without anything pressed against one ear.
Keep it off a hollow nightstand. Deep sound finds the empty drawer and buzzes, and then the recording gets the blame. A solid surface or the floor sorts that out. If you share the bed and your partner would rather have quiet, move the speaker to your side of the room and drop the level a step, which works better than putting anything next to one person’s head.
A timer, or all night?
Match the timer to the noise instead of to a round number. Somebody upstairs who finally goes to bed at midnight only needs covering for an hour. A highway needs covering until your alarm goes off.
Under the player the timer row gives you Off, 30 min, 60 min and All night, which runs for eight hours. If your street empties after midnight, the shorter settings cover falling asleep and leave the rest of the night alone. If the noise carries on until morning, use All night, because silence arriving at 2 a.m. can wake you all by itself.
Some people do wake when the sound stops. If that’s you, take the longer setting and don’t try to time it exactly. Check your alarm again whenever you change something.
Adding rain or another layer
Brown noise on its own is deliberately plain, and some people find it too plain to lie in for hours. One quieter layer over the top usually fixes that without costing you the cover underneath.
| Layer | Try it when | Watch for |
|---|---|---|
| Gentle rain | You want a softer texture over the rumble | Sharp drips, or any thunder in the recording |
| River | You’d rather have some movement than a flat sound | Splashes that jump above the brown noise |
| Soft wind | The brown noise alone feels heavy | Gusts and whistling that come and go |
Keep brown noise as the base and the second layer clearly quieter. Give the pair a few minutes, then mute the layer and see whether you miss it. Rain over brown noise is where most people end up, and the sleep soundscape guide goes further into layering.
If voices are what’s coming through
Your ear hunts for words inside anything you play, which is why speech is the hard case for every sound in this family. Brown noise is the weakest of them at it, because a voice sits well above the rumble. White and pink noise reach up to where speech lives, so they blur it more.
Play these three at the same volume for a few seconds each and you’ll hear it straight away.
Brown is the heavy one, white is the bright hiss, and pink sits in the middle with some of each. When voices are the whole problem, try pink first: it blurs speech better than brown and is easier to leave on for hours than white. The brown noise and white noise comparison goes through the differences, and the guide to noise colors covers the rest of them. No sound removes a conversation. It blurs the words, and for most people that’s enough to stop them listening in.
Give it a few nights before you judge it
Keep one setup for three nights before you change anything. What’s worth noting each morning is small: what you were covering, where the speaker sat and roughly how loud, and whether you woke up and why.
Three mornings of that is enough to tell whether the room has stopped interrupting you. And if you catch yourself lying there grading the sound instead of sleeping, turn it off for a night. That’s a sign to stop measuring it, never a reason to turn it up.
When brown noise isn’t the answer
If it helped for a week and then stopped, look outside before you touch the volume. A neighbor on a different shift, or a window somebody left open, explains most of it. Turning the sound up is the one move that reliably makes the night worse.
It also can’t do anything about a sleep problem with no sound behind it, like coffee at four in the afternoon or a schedule that shifts every week. The other case is a head that won’t stop narrating, and people do play a steady sound for that. What they describe is a low roar being better company at 3 a.m. than an empty room, which is a fair thing to try as long as you’re not expecting treatment from it.
Talk to a doctor if bad nights have run for weeks, if your days are suffering for it, or if there’s loud snoring with gasps or long pauses in the breathing. The NHLBI describes what an insomnia assessment involves, including a sleep diary and a check for other sleep disorders (NHLBI), and cognitive behavioral therapy for insomnia has much stronger backing than any color of noise. Tinnitus that’s new, one-sided or getting louder is worth an audiologist’s opinion.
Frequently asked questions
What volume should brown noise be for sleep?
Lower than feels useful at first. Raise it until the rumble you’re covering stops grabbing your attention, then leave it alone, because past that point you’re adding noise on top of noise. Set the level while the street is busy instead of in a quiet bedroom, and don’t treat a phone decibel app as a safety measurement.
Is it better to play brown noise all night?
Only if the noise runs all night. All night on the timer gives you eight hours, which suits a highway or a day’s sleep after a night shift. If your street empties after midnight, 30 or 60 minutes covers the part you need help with. Whichever you pick, play your alarm over the top once and check it still wakes you.
Is brown noise better than white noise for sleep?
Neither wins outright, and it depends on what’s waking you. Brown noise is the deep one, so it covers traffic, a boiler and bass through the floor. White noise is brighter, so it does more for voices and sharp sounds like a door. Give each one thirty seconds and keep whichever fades into the background first.
What does brown noise sound like?
A heavy, even roar with no hiss on top, nearer the noise inside a plane than a running faucet. It doesn’t change while you listen. Out of a bare phone it sounds thin and disappointing, because the deep part never makes it out of a speaker that small.
Can I sleep with brown noise in headphones all night?
People do, and the volume is the thing to watch, since sound close to your ear for eight hours is a different matter from a speaker across the room. Keep it gentle, use flat sleep earbuds you can lie on, and give your ears a night off if they feel full in the morning. A small speaker a few steps away avoids the question.
Can brown noise treat insomnia?
No. It can make your bedroom less interrupting, which is worth something when noise is the reason you’re awake. Chronic insomnia needs a proper assessment, and cognitive behavioral therapy for insomnia has far stronger evidence behind it than any color of noise.
Skip the setup: brown noise for sleep opens at half volume with the eight-hour timer already set.
Related guides
- The science and limits of brown noise
- How sound affects sleep quality
- How to fall asleep with ambient sound
- Best sounds for deep sleep
Explore more sounds in Slo
Stack two or three sounds, keep the blend, and let the timer stop it. Slo, on iOS, Android and Mac.
