White noise vs brown noise
Same family, different personalities. Hear both in ten seconds, then read what each one is actually good at.
The difference in one paragraph
Both are continuous "masking" sounds that blur out disruptions. The difference is where the energy sits. White noise spreads it evenly across every frequency, so it sounds bright and hissy — like static or hard rain. Brown noise piles its energy into the low frequencies (rolling off ~6 dB per octave), so it sounds deep and smooth — like a waterfall or an airplane cabin. Same tool, different texture.
| White noise | Brown noise | |
|---|---|---|
| Sounds like | Static, hard rain, untuned radio | Waterfall, ocean swell, plane cabin |
| Character | Bright, hissy, attention-grabbing at first | Deep, warm, easy to forget it's on |
| Best at masking | Sharp, sudden sounds: clicks, doors, voices | Low rumbles: traffic, HVAC, bass through walls |
| Typical fans | Light sleepers in noisy apartments, parents of newborns | Focus/ADHD users, people who find white noise harsh |
| Research base | Most studied of the noise colors for sleep onset | Less directly studied; benefits inferred + strong anecdotal use |
How to decide in one night
Skip the theory war and run the test: tonight, fall asleep with white noise at low volume. Tomorrow, brown noise. Keep whichever you noticed less — the whole point of a masking sound is to disappear. If both feel wrong, the quiz will point you at pink noise or silence-plus-earplugs instead; not everyone benefits from noise, and pretending otherwise would be marketing, not advice.
Deep-dive on the low end in our brown noise guide, or read the babies & white noise safety notes if you're choosing for a small human.
Frequently asked questions
Which is better for sleep, white or brown noise?
There is no universal winner — masking works with both, and comfort decides whether you keep using it. As a rule of thumb: pick white noise when your problem is sharp, unpredictable sounds (doors, clicks, voices), and brown noise when you find white noise harsh or your disturbances are low rumbles. The reliable way to choose is to test each for a night.
Which is better for ADHD and focus?
The published research (mostly Söderlund and colleagues) used white noise and found benefits for attention in some groups. The ADHD community online has largely adopted brown noise for comfort reasons — it is less fatiguing over long sessions. Since the masking mechanism is similar, comfort is a perfectly good tiebreaker.
What about pink noise?
Pink noise sits exactly between the two: flatter than white in the highs, brighter than brown in the lows. Some small studies have explored pink noise and deeper sleep stages. If white feels sharp and brown feels muffled, pink is the natural compromise.
Can I mix them?
On this site the player runs one color at a time to keep things simple. Our Brown Noise Machine app focuses on getting each color right rather than layering. In practice, one well-chosen color at the right volume does the job.
Both colors, one free app
Brown Noise Machine plays brown, white and pink noise with background audio and a sleep timer — so the test above can run all night with the screen off.
Download on the App Store