Noise color
Free brown noise
A deep, steady noise with more weight in the lower frequencies and less high-end hiss than white noise.
Free forever: play brown noise for as long as you like, with no signup or subscription.
Brown noise generator
Synthesized in your browser and repeated for continuous playback.
How brown noise sounds
Brown noise reduces energy as frequency rises, producing a lower and rounder sound than white noise. The name refers to Brownian noise, not the color itself.
A simple focus mix
Use brown noise at 20%, quiet office at 35%, and rain on a window at 20%. If the mix feels heavy, lower the noise before adding another layer.
A quieter night mix
Try brown noise at 12% beneath night crickets at 25% or gentle rain at 30%. Keep the noise in the background rather than making it the loudest layer.
Listen comfortably
Start low, especially with headphones. Ambient noise should not cover alarms, conversations or other sounds you need to hear.
Brown noise or rain?
Brown noise is a steady, low-weighted texture. Rain has changing detail from individual drops and the surface they land on. Choose the plain generator when those details interrupt your reading, or try the brown noise and rain mix when a little movement feels more natural.
Why does it sound different on my phone?
Small speakers may reproduce less of the low end that gives brown noise its character. Turning the slider up is not always the answer. Compare pink noise at a comfortable level, and adjust your device volume as well as the player. Slider positions are not measurements of sound level at your ears.