Equal-intensity sound across all frequencies. The gold standard for blocking distractions and creating a consistent sonic environment.
No account needed · Free download for Mac
What is it
White noise contains all audible frequencies at equal intensity, similar to the sound of TV static or a fan running at full speed. It creates a uniform wall of sound that effectively masks sudden noises, conversations, and environmental disruptions. White noise is the most widely searched and scientifically studied ambient sound type, used in everything from sleep aids to office sound masking systems.
Benefits
Because white noise spans the entire audible spectrum equally, it masks both high-pitched and low-pitched distractions more effectively than any single sound.
White noise has no variation or pattern, so your brain quickly habituates to it and stops paying attention, letting you focus entirely on your work.
White noise reduces the difference between background noise and peak sounds like doors slamming or traffic, helping you fall asleep and stay asleep.
One click and your acoustic environment is transformed. No playlist selection, no buffering, no ads — just immediate, reliable noise masking.
Use cases
Research
White noise is the most studied ambient sound in cognitive research. A meta-analysis in Cognitive Therapy and Research found that white noise can improve attention and cognitive performance, particularly for individuals who struggle to focus in quiet environments. Its uniform spectral profile makes it effective at masking a wide range of environmental sounds.
Mix & Match
ZeroHz lets you mix multiple sounds with independent volume controls
Explore more
White Noise plus 18+ other ambient sounds, lofi music, and a built-in focus timer. All from your Mac menu bar.
No account needed · 2hr/day free · macOS only