Brown vs Pink Noise
Short answer
Pink noise is the better everyday choice. Brown noise is better against deep, low noise such as traffic, which it covers at a lower volume. The two sound almost the same in the deep sounds. Pink keeps some high, airy sound and brown has almost none. On a phone speaker, brown loses most of its sound; pink does not.
At a Glance
The quick version. The rest of the page explains each row.
| Brown noise | Pink noise | |
|---|---|---|
| Sounds like | Weather heard through a closed window | The same weather with the window open a little |
| Best for | Deep noise: traffic, machinery, a boiler, footsteps above | An everyday choice when no one noise is the problem |
| Covers well | Deep rumble, at a lower volume than pink | Middle sounds: a TV two rooms away, cutlery, a keyboard |
| Weak at | Voices, and phone or laptop speakers | Deep rumble (you must turn it up) and clear words |
| On a phone speaker | Loses most of its sound | Still sounds like itself, only lighter |
| Try it if | You have headphones or a speaker with real bass | Brown feels heavy or gives you pressure in the ears |
Close in the Deep Sounds, Far Apart in the High Ones
We measured both sounds on this site. Brown noise gets steadily quieter as the pitch goes up, exactly as true brown noise should. Pink noise also gets quieter as the pitch goes up, but only half as fast. Of the five colours we measured, pink was the most accurate.
That small difference adds up. In the deep sounds, the two are almost the same. In the middle, pink is clearly louder. At the top, where speech, phone alerts and hiss live, pink still has some sound and brown has almost none.
This is why a quick switch between them can fool you. For two seconds they seem like the same sound, because you notice the deep part first, and they share it. Leave each one on for a few minutes and the difference becomes clear. Brown sounds like weather through a closed window. Pink sounds like the same weather with the window open a little. We set both to the same loudness, so the difference you hear is not a volume difference.
Even Sound Against a Steady Fade
Pink noise spreads its sound evenly across the low, middle and high ranges, in the way the ear hears them. Nothing is pushed forward and nothing is held back. That is why sound engineers use pink noise to test speakers and rooms, and why so many people say it sounds natural.
Brown noise fades steadily as the pitch goes up. Each step higher has about a quarter of the sound of the step below it. In practice, brown noise has almost nothing left in the high, hissy range, while pink noise still has some sound right at the top.
Put simply: pink noise is the balanced version of a dark sound. Brown noise keeps going in the same direction and does not stop.
Which Sounds Each One Can Cover
A covering sound hides noises that are close to it in pitch. It does very little for noises that are far away in pitch. These two colours are close, so the differences are small, but they are real.
For deep rumble, brown noise wins. A lorry with its engine running, a boiler, a lift, or a neighbour's bass through the wall. Brown noise covers these at a lower volume than pink, because pink spends part of its sound higher up, where nothing needs covering. Pink noise does help with traffic, but you will need to turn it up, and everything else in it gets louder too.
For middle sounds, pink noise reaches things brown noise cannot. The fullness of a voice, a television two rooms away, cutlery, a keyboard, a creaking floorboard. Pink noise does not hide these completely, but it softens them. Brown noise leaves them almost as they were.
Neither one is the answer to voices. If you can make out the words, both colours are too dark to stop that. White noise is the one that hides words, and that is a different comparison.
What Happens on a Phone Speaker
Here the two colours behave very differently. This is probably the most useful practical difference on this page.
Pink noise copes well. A phone, a laptop or a cheap Bluetooth speaker cannot play the deepest sounds. Pink noise loses that part and still sounds like pink noise, only lighter. It has sound spread across the whole range, so losing the bottom costs it only a small part.
Brown noise falls apart. Most of its sound is in the deep range that small speakers cannot play at all. What is left is a thin, weak sound. Turning the volume up does not help, because the missing part is not there to make louder.
So here is a rule that sounds strange but is true: on a phone speaker, pink noise is a better brown noise than brown noise is. If you want a dark, calm sound and you only have a small speaker, choose pink. Keep brown for headphones or a speaker with real bass, where it gives you something pink cannot.
Comfort Over a Whole Night
People often say you can leave brown noise on all night without it getting on your nerves. The reason is that long listening gets tiring mostly because of high, hissy sound, and brown noise has very little of it.
That is a fair point against white noise. Against pink noise, it mostly does not apply. Pink noise has already lost the harsh top end that makes white noise tiring, and most people find it comfortable for a full night. For that reason, pink is the colour people are most likely to still use a month after they first try it.
For some people, the difference goes the other way. A small number of people feel pressure or fullness in the ears from long, deep sound, especially on headphones. Brown noise is the colour most likely to cause this. If a night of brown noise leaves your ears feeling blocked, try pink noise. It has a similar calm feel with much less weight underneath. This is the most common reason people move from brown to pink and stay there.
One of Them Has Been in Studies. That Matters Less Than It Sounds.
Pink noise has been used in published research. Brown noise has never been tested in any study. On paper that is a big gap. In practice it is much smaller, and the details are worth knowing.
The best-known pink noise study is Papalambros and colleagues (Frontiers in Human Neuroscience, 2017). It did not test pink noise playing while you sleep. Thirteen healthy adults aged 60 to 84 slept one night with sound and one night with a fake ("sham") version. A computer watched their brain waves and played short bursts of pink noise at exact moments in their deep sleep. Their memory for words the next morning was better after the sound night. But the paper itself says that deep sleep across the whole night was about the same on both nights. It went up only while the bursts were playing. And there were only thirteen people. This was a lab method that happened to use pink noise. It tells us nothing about a pink noise track playing all night.
The other study is Nigg and colleagues (Journal of the American Academy of Child and Adolescent Psychiatry, 2024). It looked at many studies of white and pink noise together, on attention tests done in a lab, in young people with ADHD or attention problems. It found a small benefit in that group and no benefit in others. It also found no studies of brown noise at all.
For steady noise as a sleep aid in general, a 2021 review in Sleep Medicine Reviews looked at 38 studies. It rated the evidence as very low quality, and it noted that this does not match how widely people use noise for sleep.
So: pink noise's research is a lab method that does not apply to a sleep track, plus a small effect on attention tests. Brown noise has no research. Choosing pink because it is "the one with evidence" is an understandable idea, but the evidence does not really support it. Choose by sound and comfort. Be careful of any claim that either one is clinically proven. None of this is medical advice.
Picking One Without Overthinking It
Start with pink unless you have a clear reason not to. Of the five colours, it is the least likely to be wrong. It works on any speaker, and it is comfortable for long periods. If you have no specific noise to cover and just want something on, this is the answer.
Move to brown if the problem is deep. Rumble, machinery, thumping bass, footsteps above. Brown noise covers these at a lower volume than pink, and a lower volume for the same result is always the better deal.
Move back to pink if brown feels heavy, muffled or like pressure in your ears. Many people feel this, and it does not go away when you get used to the sound.
Check what you are listening on before you decide. If you compare them on a laptop speaker, the laptop has already made the choice for you.
Give each one two nights, not two minutes. The two colours are close, so a quick switch tells you very little. The real differences, such as tiredness, heaviness, or waking at 4 am, only show up over a full night.
The Short Answer
Think of pink noise as the all-rounder and brown noise as the specialist. Pink works on more devices and stays comfortable for as long as you like. Brown does more against deep, low noise and feels fuller, if your speaker or headphones can play it. Neither has research worth choosing on. The difference between them is hard to hear in the deep sounds and easy to hear in the high ones.
On this site, both sounds are made fresh as they play, so neither has a loop that repeats. Browser sessions stop after 30 minutes. The free BRW app (App Store, Google Play) has both colours and plays offline. Brown noise has no time limit in the app, so the brown night of the two-night test above can run all night. Pink noise is free for one hour a day, and Premium removes that limit.
Frequently Asked Questions
Is pink noise just brown noise turned down?
No. The difference is in the shape of the sound, not the volume, and turning brown noise down never makes pink noise. Both get quieter as the pitch goes up, but brown does so about twice as fast. So they are almost the same in the deep sounds and far apart in the high ones. We set both colours here to the same loudness, so switching between them changes where the sound sits, not how loud the room is.
Which is better for sleeping through the night?
For most people, pink noise, for a simple reason: it works on any speaker and it stays comfortable for hours. Brown noise is better when the thing that wakes you is deep and low, such as traffic, machinery or footsteps above, because it covers those at a lower volume. No research ranks noise colours for sleep. A 2021 review of steady noise as a sleep aid rated the evidence as very low quality. So match the sound to the problem.
Which one covers traffic noise better?
Brown noise, clearly, if your speaker can play it. Road noise is mostly deep sound, and brown noise puts almost all of its sound there, so it covers traffic at a lower volume than pink does. Pink noise still helps, because it is darker than white noise. But it spends much of its sound higher up, where road noise is not. So you end up turning it up and adding a lot of sound you do not need.
Can you actually hear the difference between brown and pink noise?
Yes, but not straight away. They share the same deep sound, and you notice that first, so a fast switch can seem like no change at all. Give each one a minute and the difference becomes clear. Pink has some light, airy detail at the top. Brown has almost none. We set both to the same loudness here, so what you hear is a real difference in the sound, not in the volume.
Which sounds better on a phone speaker?
Pink noise, by a wide margin. This is the one case where the advice is the same whatever is bothering you. Small speakers cannot play deep sounds, and deep sound is most of what brown noise is, so a phone plays only a thin piece of it. Pink noise loses only its lowest part and still sounds like itself. If a phone is all you have, pink is the better way to get a dark, calm sound.
Is pink noise scientifically proven while brown noise is not?
It sounds right, but the studies do not support it. Pink noise has been in studies and brown noise has not. But the famous pink noise sleep study played very short bursts of pink noise, timed by a computer to each person's own deep-sleep brain waves. It had thirteen older adults, and deep sleep across the whole night was about the same as on the fake ("sham") night. That is a lab method, not a sound playing all night. A 2024 review of many studies found small effects on attention tests in ADHD, and it found no brown noise studies at all. Neither result is a reason to choose a bedtime sound.
I get a feeling of pressure in my ears with brown noise. Is pink noise better for that?
It is the usual next step, yes. A small number of people feel fullness or pressure in the ears from long, deep sound, especially on headphones. Brown noise has more deep sound than any other colour on this site. Pink noise keeps the calm, weather-like feel with less weight in the deep range, and that is often enough to stop the feeling. Playing the sound from a speaker across the room, not in your ears, also helps. If the feeling stays after you stop the sound, talk to a doctor rather than try a different colour.