Deep Work Studio
A steady rumble, a wide ambient sound, and typing quiet enough that you barely catch it.
- Brown Noise 48%
- Deep Focus 32%
- Keyboard Typing 9%
Brown vs White vs Pink Noise: The Three-Way Comparison
White noise is the brightest of the three: an even hiss spread across every frequency you can hear, and the best of the three at covering voices and sharp sounds. Pink noise turns the high pitches down, so it comes out softer, like steady rain. Brown noise turns them down twice as far and arrives as a deep rumble. Pick white for sharp distractions, pink for a gentle background, brown for traffic and other low noise. None of them has been proven best for sleep or focus.
Quick comparison
| Feature | White noise | Pink noise | Brown noise |
|---|---|---|---|
| Spectral slope | Even across frequency | Falls 3 dB per octave | Falls 6 dB per octave |
| Character | Bright hiss, like static | Softer hiss, like rain | Deep rumble, like a waterfall |
| Strongest practical fit | Voices and sharp sounds | A general background | Traffic, boilers, bass |
| Main drawback | Can tire you out | Can be too soft in a loud room | Little help with voices |
| Direct research | Sleep and task studies, weak and mixed | ADHD task studies, and timed pulses in sleep labs | Very little |
| Listen |
The difference is a spectral slope
All three sounds are made of random noise across the frequencies you can hear. What separates them is how much of that noise sits high and how much sits low.
White noise puts the same power into every equal slice of frequency. There are more of those slices up in the high pitches than down in the bass, so most of the sound ends up high and you hear a bright hiss.
Pink noise loses 3 dB with every octave you climb, which evens things out: each octave carries about the same share. Brown noise loses 6 dB per octave, twice the drop, and what remains is mostly bass.
The slopes describe the shape of a sound, and nothing else. Two recordings can wear the same color name and still differ in how far up and down they reach, whether they peak, whether the loop is audible, and how loudly you end up playing them.
White noise: broad and bright
White noise sounds like radio static or air rushing through a vent. Because so much of it sits high, it blurs consonants, keyboard clicks and other sharp edges better than the other two.
Try it first against a voice next door, an office that keeps going quiet and loud again, or a room full of small high-pitched noises. No steady sound can take a voice away, because your brain goes on hunting for speech; what happens is the words stop being words.
The drawback is the hiss. At the same setting white noise sounds louder than brown, and through headphones it can wear on you over an hour. If you start noticing the sound itself more than what it was covering, turn it down or move to pink.
On the evidence: a review of steady broadband noise for sleep found the studies weak, inconsistent and low quality. A 2024 pooling of task studies reported small average gains from white or pink noise in kids and young adults with ADHD or attention problems, and small average harm in the comparison groups without them. That does not make white noise a sleep aid or a focus aid for everyone.
Pink noise: the balanced middle
Pink noise is quieter up top than white noise, which is why people reach for rain or far-off surf to describe it.
Try it first for reading, for a general background at night, or for any long stretch where white noise starts to feel sharp.
The drawback: it covers high-pitched sounds less well than white noise does.
On the evidence: pink noise shows up in the same ADHD task studies as white noise. Sleep laboratories have also played brief pink-noise pulses timed to the slow waves of deep sleep. Those experiments say nothing about a track running quietly all night, so a pink-noise loop that promises deeper sleep is promising more than anyone has tested.
Brown noise: deep and low
Brown noise, also called red noise, takes its name from Brownian motion. It puts most of the sound in the bass and comes out as a deep rumble, like a waterfall heard from across a valley.
Try it first against traffic, a boiler, plumbing, the bass through a wall, or when white noise simply grates on you.
The drawback is that it barely touches voices, and a phone speaker cannot play deep sound at all, so it will come out thin and uneven. Earbuds you can lie on work, or a small speaker on the floor, away from your pillow.
On the evidence: research on brown noise for sleep or adult concentration is very thin. Describing how it sounds and using it to cover a rumble is fair. Saying it changes your brain waves, treats ADHD, lifts anxiety or deepens sleep is not, because nobody has shown it. Our brown-noise science guide goes through those claims one by one.
Which is better for sleep?
No one of them wins for everybody. Match the sound to whatever is waking you:
- Traffic or a low mechanical hum: try brown noise.
- Voices, doors, or general household noise: try pink, or white kept quiet.
- White noise feels harsh: move to pink before you turn it up or give up on it.
- The room is already quiet: try silence. Adding sound may do nothing for you.
Masking is the part that holds up; controlling your sleep stages is not. Keep it quiet, keep the speaker away from your head, and make sure your alarm still gets through. The best sounds for deep sleep covers natural options and how to set them up.
Which is better for focus or studying?
Brown noise is a comfortable place to start for long writing or analysis. Pink noise covers more softly, and white noise helps against sharper room noise, though the hiss tires some people after a few hours.
The task and your own ears decide this more than the color does. White and pink noise show small average task gains in a narrow ADHD-related evidence base, which is not the same as helping every student. Brown noise has even less behind it. Run one repeated task with the sound, then in silence, and keep whichever left you less distracted.
Our guides to sounds for focus and sounds for studying match options to particular tasks.
Which is better for relaxation?
This one is down to taste. Brown noise feels warmer to a lot of listeners, pink noise sits closest to natural sound, and white noise earns its place when covering something matters more than how pleasant it is.
Comfort is not proof of a medical effect, though. A noise color gives you an optional background; it does not treat anxiety, tinnitus or insomnia. Symptoms that stick around deserve a look from a doctor or an audiologist.
A fair listening test
The louder sample almost always seems fuller and more effective, which is why volume ruins most comparisons. Match the three by how loud they actually sound to you, not by where the slider sits.
- Choose the real sound you want to soften.
- Play each color for five minutes without changing tasks.
- Set the lowest useful level for each one.
- Note whether the disturbance or the noise color attracted more attention.
- Compare the best candidate with silence.
For earbuds and headphones, the World Health Organization puts the safe ceiling around an average of 80 dB, and advises shorter sessions the louder you go. A background for work or sleep should sit well under a level that feels dominant. Stop if you notice pain, ringing, muffled hearing or fatigue.
Hear noise in context
Try brown and pink noise inside a mix
Use a low brown-noise base for work or compare pink noise with slow ocean movement for bedtime. The browser mixer lets you remove either added layer.
Ocean and Pink Noise for Restful Sleep
Pink noise runs steady while the waves rise and fall over it, for nights when the room feels too quiet.
- Pink Noise 62%
- Ocean Waves 36%
Frequently asked questions
Is brown noise better than white noise?
Brown noise is the more comfortable of the two and it handles a deep rumble like traffic. White noise holds more of the high pitches, so it does more with voices and sharp sounds. Which one is better depends on the noise you are covering, your device and your own ears.
Is pink noise better than white noise for sleep?
Pink noise usually sounds softer, but neither one has been proven better for sleep. The timed pink-noise pulses used in sleep laboratories are not the same as a track playing all night. Go with the quieter sound that covers whatever is waking you.
Is brown noise or pink noise better for focus?
Brown noise is the first thing to try against a low rumble in the room; pink noise sits lighter over a long session. Direct evidence on focus is thin for both, and thinnest for brown noise. Run the same task with each and in silence.
Can noise colors help ADHD?
Pooling task studies in 2024, Nigg and colleagues found small average gains from white or pink noise among kids and young adults with ADHD or attention problems. Nothing in that work made brown noise a treatment, and none of it stands in for a diagnosis or care.
Can you mix brown, white, and pink noise?
You can, though stacking two hissy sounds usually just shifts the balance and raises the level without adding anything you needed. Start with one color, add a second only to cover a gap it leaves, and pull the overall level back down afterwards.
Research referenced
- Riedy and colleagues (2021), Noise as a sleep aid: A systematic review.
- Nigg and colleagues (2024), Do White Noise or Pink Noise Help With Task Performance in Youth With ADHD or Elevated Attention Problems?.
- Ngo and colleagues (2013), Auditory Closed-Loop Stimulation of the Sleep Slow Oscillation Enhances Memory.
- World Health Organization (2026), Deafness and hearing loss: Safe listening.
Related guides
- Complete Guide to Noise Colors
- The Science Behind Brown Noise
- Best Sounds for Deep Sleep
- Best Sounds for Focus
Want another way to compare the textures? The Slo app holds more sounds than the browser player and remembers the mixes you save.
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.
