Brown noise is a deep, rumbling random sound that many adults with ADHD say helps them settle and concentrate, a claim that spread widely on TikTok and Reddit in 2022. The reports are numerous and often vivid, but the controlled research is small, mostly about white or pink noise rather than brown, and mixed in its findings. This page gives an honest summary and a free way to try it.
The generator here is free, open source, and free of ads, signup and tracking. It synthesizes brown noise in real time in your browser, so it never loops, and the presets below are the ones people most often use for focus. Nothing on this page is medical advice; if you have ADHD, decisions about treatment belong with you and your clinician.
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In 2022, videos of people with ADHD reacting to brown noise for the first time went viral. The descriptions were consistent: a sudden quieting of internal chatter, a feeling of thoughts settling, or as one widely shared post put it, the sound of a fan in a room they had never been able to find. Reddit threads in ADHD communities filled with similar reports, and searches for brown noise rose sharply. Journalists covered it, and several clinicians said they were hearing it from patients too.
This is a large body of anecdote. It is worth taking seriously as a description of what people experience, while being clear that self-reports of this kind cannot tell us whether the effect is specific to brown noise, whether it is a placebo, or how large it is. People who tried it and felt nothing are also less likely to post about it.
The best-known studies come from a Swedish group led by Göran Söderlund, beginning in 2007. In a series of small experiments, children with attention difficulties performed better on memory and attention tasks with white noise playing, while children without such difficulties performed slightly worse. The proposed explanation, called the moderate brain arousal model, is that noise adds just enough random stimulation to bring an under-aroused attention system into a better working range. Later studies extended this to adults and to pink noise with broadly similar, though not uniform, results.
These studies used groups of a few dozen, short tasks in a laboratory, and white or pink noise rather than brown. Reviews of the literature describe the evidence as promising but preliminary, and there are essentially no controlled trials of brown noise specifically for ADHD. It is reasonable to say that noise may help some people with attention difficulties. It is not reasonable to say brown noise treats ADHD.
Two explanations are usually offered and both may be partly true. The first is ordinary masking: a steady sound covers the environmental noises that would otherwise interrupt, and people with ADHD tend to be more easily pulled away by such interruptions. The second is the arousal idea from the Söderlund work, sometimes framed in terms of stochastic resonance, where a small amount of random input can improve the detection of a weak signal in a noisy system.
Why brown rather than white? The honest answer is that nobody has tested it. A plausible guess is comfort: brown noise has almost no high-frequency content, so it can be played for hours without the fatigue that pure white noise causes, and a sound you can tolerate is a sound you will actually use. Its power falls 6 dB per octave, described further on the physics page.
Press play to load Deep Work, a brown-leaning blend with a perceptual EQ that keeps it balanced at low volume. Set the volume so that you could still hear someone speaking to you, then start a task and give it twenty minutes. If it feels too bright, try Deep Brown or Heavy Blanket, which are pure brown. If it feels too muffled, nudge the color slider down toward 3.5.
The sleep timer works as a work timer, fading the sound out after a set period. Install the page as an app so it is one tap away, and keep the URL of a setting that works since it stores every parameter. Some people find that noise helps for certain tasks, such as reading, and not others; that is normal and worth noting for yourself.
Brown noise is not a treatment for ADHD, does not replace medication or therapy, and has not been shown in controlled trials to improve ADHD symptoms. It is a cheap, low-risk thing that some people find useful for focusing, in the same category as a tidy desk or a closed door. If you are considering changes to a treatment plan, talk to the clinician who manages it. If you try brown noise and it does nothing for you, that is a common outcome and does not say anything about your ADHD.
No. There are no controlled trials of brown noise for ADHD, and the related research on white and pink noise is small and mixed. It may help some people concentrate, in the way a quiet room or a closed door does. It is not a substitute for assessment, medication or therapy, and this page is not medical advice.
The research that exists mostly used white or pink noise, so there is no evidence that brown is more effective. Its popularity is probably about comfort: brown noise has very little high-frequency content and can be played for hours without fatigue. If white noise works for you, there is no reason to switch.
There is no established duration. In studies, noise played throughout the task, which lasted minutes to an hour. In practice people use it for the length of a work block and switch it off during breaks. Give a new setting at least twenty minutes before deciding, and keep the volume low enough that speech is still audible.
Listening to quiet steady noise does not interact with medication, and many people use both. Do not treat it as a reason to change a dose or skip medication. Any decision about treatment should be made with the clinician managing it, and this site is not a source of medical advice.
No. Even the enthusiastic social media reports include many people for whom it did nothing or was irritating. The small studies that exist also show a range of responses, with some participants doing worse. It is a low-cost experiment with a real chance of being useful and a real chance of not being, and either result is normal.
At low volume, steady noise is safe for children, and the original research was done with children. Keep it quiet enough that a conversation is easy, use a speaker rather than earbuds, and treat it as a study aid rather than an intervention. Talk to the child's clinician before relying on it as part of managing symptoms.