White Noise
White noise contains equal power at every frequency, producing a flat, steady hiss. It's the classic masking sound for blocking sudden noises so you can sleep or concentrate. Soundlull generates it live — no file to download.
The noise colors (white, pink, brown, green & gray) generate real audio in your browser. Loop-based channels play once their audio files are added.
Frequently asked questions
What is white noise?
White noise contains equal energy at every audible frequency, producing a flat, steady hiss similar to an untuned radio or a hair dryer. That even spread is what makes it effective at masking sudden noises.
Is white noise safe for babies?
White noise is widely used to help babies sleep by mimicking the muffled sounds of the womb. Pediatric guidance generally suggests keeping the volume moderate and the device a few feet from the crib rather than right next to it. When in doubt, check with your pediatrician.
What's the difference between white, pink, brown, green, and gray noise?
They differ in how energy is spread across frequencies. White noise is flat and bright, pink is balanced and natural, brown is deep and bass-heavy, green concentrates on the mids like rushing water, and gray is shaped so every pitch sounds equally loud. Try each and use whichever you find most comfortable.