What is brown noise?
Brown noise is random sound with most of its energy in the low frequencies. Its power falls by about 6 dB for every octave you go up, so the bright hiss you hear in white noise is almost gone, and what is left is a soft, deep rumble. People often compare it to heavy rain on a roof, a strong waterfall heard from a distance, or the hum inside an aeroplane cabin.
Brown noise vs white and pink noise
- White noise has equal energy at every frequency and sounds bright and hissy. It covers the widest range of sounds.
- Pink noise falls off by about 3 dB per octave, so it sounds smoother, like steady rain.
- Brown noise falls off by about 6 dB per octave, so it is the deepest and softest of the three.
You can compare all three side by side on our white, pink and brown noise page.
Why people choose brown noise for sleep
- It’s easy on the ears. With little treble, there’s no sharp hiss to notice as you drift off.
- It covers low sounds. Traffic, a neighbour’s bass, a fridge or a snoring partner all sit in the low range where brown noise is strongest.
- It blends into the background. A steady rumble with no pattern gives your brain nothing to follow, so it fades from attention after a few minutes.
Classic, deep or with rain?
- Classic is standard brown noise: a full, even rumble.
- Deep removes even more of the upper range for a heavier, almost felt-more-than-heard sound. Good for covering engine noise or a thumping beat next door.
- With rain adds a light rain hiss on top, for when pure noise feels too plain. Prefer just rain? Try our rain sounds.
Tips for sleeping with brown noise
- Start quiet. Set it just loud enough to blur the sounds you want to cover.
- Use a real speaker if you can. Phone speakers can’t reproduce much bass, so brown noise sounds thin on them. A bedside speaker makes a big difference.
- Let it fade. Set the sleep timer and the noise lowers gradually to silence instead of stopping abruptly.
Brown noise in nive
In the nive app you can layer brown noise with up to five other sounds, such as rain, ocean waves or a fireplace, balance each one, and play the mix on a Google Cast or AirPlay speaker. Sleep Mode fades the whole mix to silence over 30 minutes to 8 hours, and downloaded mixes play offline.
Questions
Is this brown noise free?
Yes. The player on this page is free, needs no account and has no ads. The noise is generated live in your browser, so it starts instantly and never repeats audibly.
Is brown noise better than white noise for sleep?
Neither is better for everyone. Brown noise has much less high-frequency hiss, so many people find it calmer for a whole night. White noise masks bright sounds like voices more strongly. Try each at a low volume and keep the one you stop noticing.
Does brown noise help with focus or ADHD?
Many people say a steady rumble helps them concentrate, and it's popular for work and study. There's little research on brown noise specifically, though, and it isn't a treatment for ADHD or any other condition.
Is it safe to sleep with brown noise all night?
Keep the volume low, well below normal conversation, and use the sleep timer if you don't need it all night. Deep sounds can feel quieter than they are, so turn it down rather than up.
Why is it called brown noise?
Not because of the colour. It's named after Brownian motion, the random drifting movement of particles, because the signal wanders in a similar way. It's also called red noise.
Take it to bed with you
The nive app plays studio-recorded rain, ocean, forest, fire and noise, lets you layer up to six sounds, works offline, and fades your mix to silence with Sleep Mode. Play it on Google Cast and AirPlay speakers too. On Android now with a 7-day free trial, then $2.99 a month or $19.99 a year. Coming soon to iPhone.
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