White noise is a type of sound that contains all audible frequencies played at equal intensity, similar to how white light contains all colors of light mixed together. Imagine the steady hiss of a radio tuned between stations, the hum of an air conditioner, or the sound of rain — those are examples of white noise.
White noise is a random signal with equal power across all frequencies within the range of human hearing (roughly 20 Hz to 20 kHz).
It sounds like a steady "shhh" or hiss.
White noise helps cover up sudden, distracting noises (like traffic, neighbors, or a partner snoring).
Its constant, predictable nature can be soothing to the brain, which craves patterns. With fewer disruptions, it's easier to relax, sleep, or concentrate.
Many people link it to natural comforting sounds — rain, wind, ocean waves — which can trigger a sense of safety and calm.
The auditory system stops reacting strongly to changes in sound, since the noise is steady and unchanging. This reduces the "alertness" response and promotes relaxation.
White noise helps smooth over environmental noise spikes, creating a stable sound environment that makes it easier to fall and stay asleep.
In work or study, it can drown out background chatter, improving sustained attention.
It's often used in tinnitus treatment, where the steady noise reduces the perception of ringing in the ears.
Whitenoise.fm is yet another side project, designed and developed by Andreas Pihlström (Suprb) in 2025.
Visualization based on "Star Nest" by benoitM. Licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0. Adapted for WebGL compatibility, synchronized with audio crossfade timing, and modified with state-based animation controls.