Brown Noise for Sleep
Brown noise is a deep, low rumble — closer to a distant waterfall than to static. Many listeners choose it at night because low frequencies are good at masking the sounds that carry through walls: voices, traffic, appliances.
AuraFlow brown noise is generated live in your browser, so the rumble never loops and never restarts. Type "brown noise" at auraflowfocus.com and hear it built live, free to try with no account.
What you'll hear
A continuous, deep, even rumble with no hiss on top and no pattern to learn. It stays the same in character all night while never repeating the same audio — steady, not looped.
Brown noise vs pink noise vs white noise
White noise is bright and hissy — all frequencies at equal intensity. Pink noise sits in the middle and sounds like steady rainfall. Brown noise emphasises the low end most, which is why many listeners pick it when the goal is masking a noisy house or street. All three are generated live on AuraFlow, and all three are free to compare — the full noise colors guide goes deeper.
How to play it tonight
- Press play — no signup.
- Set the sleep timer, or let it run.
- Start low: brown noise gets loud fast at high volume, and low is usually enough to mask a room.
FAQ
Does brown noise loop?
No. It is generated live in your browser using the Web Audio API, so there is no file and no loop point — the sound doesn't restart or repeat, whether you listen for 20 minutes or all night.
Can I play it all night?
Yes. There is no track length to run out, so the sound keeps generating for as long as you leave it playing. The sleep timer is there if you want it to stop after a set time.
Is brown noise free?
Yes — brown noise is free to try, no account needed. You get one free world to keep, plus a 60-second taste of the others. Pro ($9/month or $79/year, with a 7-day free trial on the monthly plan) unlocks the full library and full sleep modes.
What is the difference between white noise, brown noise, and pink noise?
White noise contains all audible frequencies at equal intensity — a bright, steady hiss. Pink noise tilts toward the lower frequencies, sounding softer, like steady rainfall. Brown noise tilts further still, producing a deep, warm rumble. All three mask sudden background sounds; which one suits you is usually the one you stop noticing fastest, and all three are free to compare.
Try it — free, no account
Type anything at AuraFlow and it builds that sound world live — rain over the ocean, a quiet forest, brown noise, whatever you name. Your first world is free to keep, and you can take a 60-second taste of the rest. Pro is $9/month or $79/year, with a 7-day free trial on the monthly plan.
Open AuraFlow — free to tryTalk about it in the AuraFlow Sleep & Focus Community