Brown Noise for Sleep: How It Compares With White and Pink Noise

Brown noise is a deep, low rumble, a bit like a strong waterfall, heavy rain on a roof or wind through trees. Many people find it soothing at bedtime because it covers sudden sounds, such as traffic or a neighbour's door, with a steady blanket of noise. Research on noise colours and sleep is limited and mixed, so the best choice comes down to what you find comfortable, played at a low volume.

What the noise colours mean

"Colour" describes how the energy in a sound is spread across low and high pitches. A sound that contains every pitch at equal strength is called white noise, by analogy with white light. Other colours tilt the balance.

Brown noise is sometimes called red noise, and the name comes from Brownian motion, the random jiggling of particles, rather than the colour itself.

Why steady sound can help

We are rarely woken by noise itself so much as by change: a sudden bang, a voice in the street, a car door. The brain keeps listening during sleep, especially in the lighter stages described in our guide to sleep cycles. A constant background sound narrows the gap between silence and a disturbance, so fewer sounds stand out enough to rouse you. This is called sound masking.

Steady sound also gives a busy mind something neutral to rest on, which some people find calming when thoughts keep circling at bedtime.

Brown, pink or white: which is better for sleep?

There is no clear winner. White noise masks a wide range of sounds but can feel harsh. Pink noise is gentler and is the colour most often used in research on sleep and sound, though findings so far are early. Brown noise is the mellowest of the three and appeals to people who dislike any hiss. If traffic rumble is your main problem, a deeper sound may blend with it better; if high-pitched noises bother you, white or pink may cover them more fully.

What about ocean noises and rain?

Ocean waves, rain and streams are natural mixtures that sit somewhere between pink and brown. Their slow rhythm suits many people, though a sudden crash of a wave or a bird call in a recording can be enough to disturb a light sleeper. Look for long, loop-free tracks without abrupt changes.

How to use bedtime sound safely

1. Keep it quiet. The sound should sit in the background, softer than normal conversation. If you have to raise your voice over it, it is too loud.
2. Put the speaker across the room, not on the pillow or right beside your head.
3. Be wary of earbuds all night. Sleeping with them in can irritate the ear canal, and volume creeps up easily. Soft sleep headbands are an alternative, still at low volume.
4. Use a timer if you can. Some people only need sound to fall asleep; others prefer it all night to cover early-morning noise. Try both.
5. For babies, keep any machine well away from the cot and at a low setting, and follow your health visitor's advice.

Possible downsides

• You may come to rely on it and find silence harder, for example when travelling.
• It can mask sounds you need to hear, such as a smoke alarm or a child calling.
• A partner may not share your taste, so compromise on volume or try a headband.
• It will not fix the deeper causes of poor sleep, such as stress, an irregular schedule or a sleep disorder.

Trying it out

Pick one colour, set a comfortable volume and use it every night for a week before judging. Pair it with the basics from our guide on how to fall asleep faster, such as a regular wake time and a dim last hour of the evening. If your mind still races, a simple relaxation routine like the military sleep method can be combined with background sound.

Questions people ask

Is brown noise better than white noise for sleep?

For some people, yes, mainly because it sounds softer. Others sleep better with white or pink. Preference is a fair guide.

Can I play it all night?

Many people do. Keep the volume low and the speaker away from your head.

Does it help with tinnitus?

Some people with ringing in the ears find background sound makes it less noticeable at night. If tinnitus is new, one-sided or bothersome, see your GP or an audiology service.