White vs Pink vs Brown Noise
White, pink and brown noise differ in how energy is spread across frequencies. That changes how they sound, from hissy to deep rumble.
The difference in one table
| Noise | Spectrum | Sounds like |
|---|---|---|
| White | Equal energy per Hz | Hiss, TV static |
| Pink | −3 dB per octave | Steady rain |
| Brown | −6 dB per octave | Waterfall, distant thunder |
Sleep and focus
Steady noise masks sudden sounds, which can help some people fall asleep in noisy places. Research on benefits beyond masking is mixed and small-scale, so choose the colour you find most comfortable. Keep levels moderate, especially for infants.
Try them
Play white noise, pink noise and brown noise, or mix them in the noise generator. More detail in noise colours explained.
Related tools
Frequently Asked Questions
Q.Which noise is best for sleep?
Whichever you find comfortable at a low level; many prefer pink or brown.
Q.Is white noise bad for hearing?
Not at moderate volume.