White Noise Generator

White noise is a random signal that contains every audible frequency at equal intensity, which is why it sounds like a flat hiss or static. Because every pitch plays at the same volume, it blends with sudden sounds like a door closing or traffic outside, which is why it works well for masking distraction.

White noise has equal energy at every frequency and sounds bright and hissy. Pink noise drops 3 decibels per octave as frequency rises, so it sounds warmer, closer to steady rain. Brown noise drops 6 decibels per octave, producing a deeper, lower rumble similar to a waterfall or distant thunder.

Not universally, but many people find it more comfortable for long sessions, since it carries less high-frequency energy, which some find tiring over time. Preference depends on the person and the task, so this tool lets you switch or blend colors instead of locking you into one option.

Yes. Each color has its own volume slider, so you can play more than one at once, for example a little brown noise under a stronger pink noise layer. The signals combine live through your browser's audio engine, with a limiter that keeps the mix from distorting at high volume.

Yes, automatically. Every time you adjust a slider, the volume for each color saves in your browser's local storage, with no account or signup. Close the tab and come back later, and your last mix is exactly where you left it, ready for you to press Play again.

No, speakers work fine, though headphones give more control over how loud the noise is relative to your surroundings. Individual response to background sound varies, so headphones are the more predictable choice if you are sharing a room with someone who is not listening to the same mix.

Yes. Once a layer starts, it loops continuously in the browser's audio engine even while the tab is in the background or the screen is off. It only stops when you press Pause, close the tab, or close the browser itself.

At a moderate volume, yes, the same way any background sound is safe. General guidance for any audio source is to keep it well below the level that causes discomfort and to give your ears occasional breaks. This tool has no built-in volume limit, so that judgment call is yours.

Not yet. This first version only ships the three noise colors, because they are generated instantly from math and need no audio file at all. Recorded ambient sounds are a real, different kind of asset, and adding them properly later is better than faking a placeholder now.

No. Once the page has loaded, the noise is generated inside your browser rather than streamed from a server, so it keeps playing even if your connection drops. You only need internet again to load this page or another tool on the site.