If you’ve been searching for the best sound to help you sleep, you’ve probably come across both white noise and brown noise. They’re both popular, both effective — but they sound very different and work best for different people. So which one should you choose?
In this guide, we break down the science behind each, compare them head to head, and help you figure out which is the right fit for your sleep situation.
What is White Noise?
White noise contains all audible sound frequencies played simultaneously at equal intensity. Think of it like white light — just as white light contains every colour of the visible spectrum, white noise contains every frequency of sound the human ear can detect.
The result is a consistent, steady hiss — similar to a fan, TV static, or air conditioning. It’s the most widely researched sound for sleep, used in hospitals, neonatal units, and bedrooms around the world.
White noise works by creating a consistent audio “mask” that reduces the contrast between background noise and sudden disruptive sounds — like a door slamming, a car horn, or a partner snoring. Rather than eliminating noise, it makes sudden sounds less jarring, helping your brain stay in a relaxed state.
Common white noise examples: fan noise, air conditioning, TV static, dedicated white noise machines.
What is Brown Noise?
Brown noise (also called red noise) emphasises lower frequencies, producing a deeper, richer, more bass-heavy sound. It’s named after botanist Robert Brown, who discovered Brownian motion — the random movement pattern that generates this type of sound mathematically.
Brown noise sounds less like static and more like a powerful natural force — a rumbling waterfall, heavy rainfall, strong wind, or distant thunder. Many people find it significantly more soothing than white noise, particularly for extended listening, because the lower frequencies feel less harsh and fatiguing on the ears.
Common brown noise examples: heavy rainfall, strong wind, deep ocean waves, rumbling thunder.
What is Pink Noise?
Pink noise sits between white and brown on the frequency spectrum. It has more bass than white noise but less than brown, producing a sound similar to steady rainfall or a gentle waterfall. Some research suggests pink noise may improve deep sleep quality by synchronising brain waves during slow-wave sleep — though the evidence is still emerging.
If you find white noise too sharp and brown noise too heavy, pink noise is worth trying. Many of our sound machines offer all three.
White Noise vs Brown Noise: Head-to-Head Comparison
Sound quality
White noise has a higher-pitched, more uniform hiss. Brown noise is deeper, warmer, and more bass-heavy. Most adults who switch from white to brown noise report preferring the sound of brown noise for extended listening — it simply feels less clinical and more natural.
Research and evidence
White noise has a significantly larger body of clinical research behind it. Studies have shown it can reduce sleep onset time, improve sleep quality in noisy environments, and help settle infants. A 2021 review published in Sleep Medicine Reviews found white noise effective for masking environmental noise during sleep across multiple age groups.
Brown noise research is more limited but growing. Anecdotally, many adults — particularly those with ADHD — report improved focus and relaxation with brown noise. However, the clinical evidence for sleep specifically is not yet as robust as white noise.
Baby and nursery use
For settling babies, white noise is the clear frontrunner. It closely mimics the sounds heard in the womb — the whooshing of blood flow and muffled ambient noise — which is why newborns respond so strongly to it. Paediatricians and sleep consultants consistently recommend white noise for infant sleep.
If you’re looking for a baby white noise machine, white noise is the most researched and recommended option.
Tinnitus relief
Both white and brown noise can help mask tinnitus — the persistent ringing or buzzing in the ears that affects millions of Australians. White noise is the clinical standard recommended by most audiologists, as it covers the full frequency range and is most likely to mask the specific pitch of a person’s tinnitus. Brown noise may also help, particularly for those whose tinnitus is lower in pitch.
Blocking environmental noise
Both are effective at masking environmental noise like traffic, snoring, and noisy neighbours. White noise provides broader frequency coverage, which makes it slightly more effective at masking a wider range of sounds. Brown noise may feel more comfortable for all-night use due to its warmer tone.
Which is Better for Sleep?
The honest answer: it depends on the person. Here’s a simple guide:
- Choose white noise if you’re settling a baby, have tinnitus, or need maximum noise masking in a loud environment
- Choose brown noise if you find white noise too harsh or fatiguing, or if you prefer a deeper, more natural sound
- Try pink noise if you want something in between, or if you’re interested in potential deep sleep benefits
- Try all three if you’re not sure — many of our sound machines offer multiple options so you can experiment
The best white noise machine is the one you’ll actually use every night. If brown noise helps you fall asleep faster and stay asleep longer, it’s the better choice for you — regardless of what the research says about white noise.
Our Recommendations
If you want to try both white and brown noise, look for a sound machine with multiple sound options. Our Tranquillity Bluetooth White Noise Machine and Serenity Portable White Noise Machine both offer a range of sounds including white noise, nature sounds, and more — so you can find what works for you without committing to a single sound type.
If you prefer natural, mechanical fan-based white noise with no digital recordings, the Dohm White Noise Machine is the gold standard — the original fan-based sound machine trusted by sleep specialists worldwide.
Frequently Asked Questions
Is brown noise better than white noise for sleep?
Not necessarily — it depends on personal preference. White noise has more clinical research behind it, but many adults find brown noise more comfortable for extended listening. Try both and see which helps you fall asleep faster and stay asleep longer.
Is white noise safe to use every night?
Yes, white noise is safe for nightly use at a reasonable volume. Keep the volume at or below 50 decibels (roughly the level of a quiet conversation) and position the machine at least one metre from your bed. This applies to both adults and babies.
Can white noise help with tinnitus?
Yes. White noise is one of the most commonly recommended tools for tinnitus management. It works by masking the ringing or buzzing sound, making it less noticeable and easier to sleep through. Consult your audiologist for personalised advice.
What is the best white noise machine in Australia?
The best white noise machine depends on your needs. For natural fan-based sound, the Dohm is the most trusted option. For digital sound variety and portability, the Serenity and Tranquillity are excellent choices. Browse our full range of white noise machines for sleeping to compare options.
Does brown noise help babies sleep?
White noise is generally more effective for babies as it more closely mimics womb sounds. However, some parents find brown noise works well for older infants and toddlers. Always keep volume levels safe and position the machine away from the cot.
What’s the difference between white, pink, and brown noise?
White noise covers all frequencies equally — it sounds like static or a fan. Pink noise has more bass than white noise and sounds like steady rainfall. Brown noise has the most bass and sounds like a deep rumble, waterfall, or heavy rain. All three can help with sleep; the best choice is whichever you find most comfortable.
