Brown noise for sleep
The deep rumble that puts the internet to sleep — set up properly: right depth, right volume, fade-out timer, black screen. Free and endless, no ads.
1 Depth: go Medium or Deep
In the bar below, switch brown to Medium or Deep — the deep variants shift the energy even lower, from "waterfall nearby" to "airplane cabin at night". In our sleep app, Deep is what people actually stay on. (Sensitive to bass through the pillow? Standard keeps a touch more balance.)
2 Volume: quieter than you think
Set it to the level of a soft shower heard from the next room. The job is to raise the sound floor so a door or a car doesn't spike above it — not to drown the world. Too loud works against sleep and against your ears, especially on headphones.
3 Timer + black screen
Tap the timer in the bar: 30-45 min if you only need help falling asleep (it fades out gently), 8 hours if noise wakes you at night. Then hit the moon button — the screen goes black with barely-visible controls, the sound keeps playing, and your phone stops lighting up the bedroom. That's the whole nighttime setup, and none of it needed a 10-hour YouTube video.
Why brown specifically at night
Sleep science on noise colors is young — the honest summary is that continuous noise helps many people in noisy environments (a 2021 systematic review found improved sleep onset, while calling for better studies), and that which color matters mostly through comfort. Brown's case for nighttime is practical: its energy overlaps the rumbles that actually wake city sleepers, and its lack of hiss gives your brain nothing to monitor. If it feels too dark, green or pink are the neighboring stops on the spectrum.
Go deeper
- What is brown noise? — the full guide (Brownian motion included)
- Add a delta binaural beat — for the experimental-minded
- The color comparison — white vs pink vs brown vs green
Frequently asked questions
Why does brown noise work so well for sleep?
Two reasons. First, masking: its energy sits exactly where most sleep-wrecking sounds live — traffic rumble, HVAC, footsteps, a neighbor's bass — so those blend into the wash instead of waking you. Second, comfort: with the hissy highs rolled off, your auditory system has nothing "interesting" to monitor, which makes it easier for attention to let go. That second part is why so many people who bounced off white noise stay with brown.
Should I leave brown noise on all night or use a timer?
Both work; they serve different problems. If you wake from environmental noise at 3am, all night is the move (that's what the 8-hour timer is for). If your problem is only falling asleep, a 30-45 minute fade-out is gentler and spares your ears. Start with the timer; upgrade to all-night only if you're still being woken.
What volume should brown noise be for sleeping?
Quieter than instinct suggests: about the level of a soft shower heard from the next room, and never louder than a normal conversation. The goal is to raise the sound floor so disruptions stand out less — not to bulldoze them. If you use headphones or earbuds, be extra conservative; your ears are in it for hours.
Which depth should I pick — Standard, Medium or Deep?
For sleep, most of our app users settle on Medium or Deep. Deep trims the last of the texture and leaves pure warm rumble — the closest thing to sleeping in an airplane cabin (in the good way). Standard keeps a little more presence, useful if your disruptions include mid-range sounds like voices.
Is brown noise safe every night? Will I become dependent?
At sensible volume it is as safe as any steady sound. "Dependence" is really habit: your brain learns the cue "this sound = sleep", which is exactly why it works — same as a bedtime routine. If you ever want to stop, taper the volume down over a week rather than going cold turkey.
The same sound, on your nightstand
Brown Noise Machine is this player as an app: background audio with the screen locked, sleep timer, the same three depths. Free on iOS.
Download on the App Store