Background noise helps some people focus by covering the unpredictable sounds, especially other people's speech, that pull attention away from a task. The colors that do this best for long sessions are pink noise, brown noise and grey noise, which cover conversations without the sharp hiss that makes white noise tiring after an hour.
This page is a free focus noise generator with no ads, no signup and nothing to install unless you want to. The eight focus presets range from bright blue-white for masking voices to deep brown for quiet rooms. The sound is synthesized continuously in your browser, so there are no loops, no playlists that end, and no advertisements between tracks.
Free, no ads, no signup. Runs entirely in your browser.
The most distracting sound in any workplace is intelligible speech. The brain processes language whether you want it to or not, and a half-heard conversation nearby is far more disruptive than a louder but meaningless sound at the same level. Steady noise reduces the intelligibility of nearby speech, which is the principle behind sound-masking systems installed in open offices. A second effect is simple consistency: a room with a stable background has fewer sudden changes to react to.
Whether noise improves attention beyond masking is less clear. Small studies suggest that white noise can help people who are easily distracted while slightly hurting people who are not, and the effect sizes are modest. If a quiet room already works for you, noise may add nothing. If you work somewhere noisy, it usually helps.
For a session of several hours, pink or pink-brown blends are the usual choice. They cover speech, which sits between roughly 300 Hz and 3 kHz, without the brightness that fatigues. Focus Zone and Deep Work are both in this range with the grey EQ on, which keeps them balanced at low volume. If the room is already quiet and you simply want a settled feeling, deep brown noise works and is the subject of the ADHD page.
If your problem is specifically voices, a brighter color masks them more efficiently per decibel. Study Hall uses a blue-white blend for this. Concentration sits between, with a uniform texture that some people find less monotonous. Whichever you start with, give it a full work block before judging; the first few minutes with any new sound are spent noticing it, and the useful effect only shows once you have stopped.
Music with lyrics competes for the same language processing as speech and tends to hurt reading and writing tasks. Instrumental music is better but still has structure the brain follows: changes, builds, endings. Noise has none of that. It has no beginning or end, no chorus, and no track boundary where an advertisement can appear. For that reason many people who used lo-fi playlists move to noise for the deepest work and keep music for lighter tasks.
The other difference is repetition. A playlist repeats; a looped ambient recording repeats. The noise here is new on every sample, so there is nothing for the mind to latch onto and anticipate. It also carries no memory: a track you associate with a particular mood or a particular time brings that with it, while noise is the same neutral thing every day.
The right level is just above the sounds you are trying to cover and no higher. In a quiet library that is very low; in an open office it is louder but should still let you hear someone addressing you directly. Volume that rises across the day is a common trap, since the ear adapts and the noise seems to disappear; if you notice you have turned it up twice, bring it back down.
With headphones, closed-back or in-ear types isolate outside sound and let you keep the noise quieter. Over speakers, the noise also covers your own sounds for people nearby, which is sometimes the point. In a shared space, a small speaker playing pink or grey noise quietly is often welcomed by everyone, since it makes each person's keyboard and phone calls less distinct to the others.
Press play to load Focus Zone. Number keys 1 through 9 switch between the first presets, space pauses, and the arrow keys adjust volume, so you can control it without leaving your keyboard. The sleep timer doubles as a work timer: set it for 25 or 50 minutes and the fade-out is a soft signal that the block is over. Install the page as an app so it lives in your dock or home screen and works offline.
Once you have a setting you like, the URL contains it; bookmark it or share it with a study group. If you work somewhere without a browser, export a WAV of any length and play it from anything. Nothing is uploaded and no account is needed for any of this; custom presets are saved in your own browser.
It helps some people, mainly by masking speech and other unpredictable sounds. Small studies suggest a modest benefit for people who are easily distracted and no benefit or a slight cost for those who are not. Pink or brown noise are usually more comfortable than white for study sessions longer than an hour.
Pink covers voices better because it has more energy in the speech range; brown is more relaxing and less noticeable in an already quiet room. Many people use a blend, which is what Focus Zone and Deep Work are. Try each for twenty minutes on the same task and keep the one you forgot about first.
Just enough to blur the sounds you want to ignore. You should still be able to hear someone speak to you at normal volume. If you find yourself raising it during the day, that is adaptation rather than need, and it is worth resetting to where you started.
Yes. The sleep timer fades the sound out after any duration you choose, so setting it for 25 minutes gives you a quiet signal that the block is over without an alarm. Press play again to start the next one. The URL keeps your preset and settings, so a bookmark restores everything.
For reading and writing, usually. Lyrics compete with language processing and even instrumental music has structure the mind follows. Noise has no structure and no end. For repetitive or physical tasks, music often works as well or better. Many people keep both and switch depending on the job.