The color of a noise is based on its frequency. The lowest frequencies are red, and the highest frequencies are violet. White noise is in the middle, with an equal volume of all frequencies. Brown noise contains all frequencies but places a larger emphasis on lower frequencies. Pink noise falls between white and brown noise, with a larger emphasis on high frequencies. Blue noise has high frequencies that come in a little louder than low frequencies. Violet noise is the opposite of brown noise, with louder high frequencies than low frequencies.
-Brown noise is made up of low-frequency sounds, and examples of brown noise include thunder, crashing waves, and heavy rain. Brown noise is believed to help people sleep better, as it can mask higher-frequency sounds that may keep people awake.
-Pink noise is a type of noise that has a higher emphasis on high frequencies than brown noise, but less than white noise. You’ll find plenty of examples of pink noise in nature, like wind blowing through trees, low waves, or steady rainfall.
-Blue noise. Hissing water spray may help you focus, researchers say If you’re looking for a way to boost your concentration, you may want to try blue noise. Researchers say that this type of noise, which sounds like a hissing water spray, can help people focus and block out distractions. So next time you’re struggling to concentrate, don’t reach for your headphones – try making some blue noise instead.
-Violet noise is a type of noise that has louder high frequencies than low frequencies. It is the opposite of brown noise and sounds like high-pitched TV static.
Benefits of brown noise:
If you’re looking for a way to relax or get some better sleep, you may want to try brown noise. This type of noise can have a calming effect, and it has a number of benefits. Brown noise may help lull you to sleep by lowering your heart rate and calming your breathing. Additionally, it can aid in concentration and focus, and promote relaxation. And for those with tinnitus, brown noise may help to mask the ringing in the ears.
Source: https://www.insider.com/guides/health/treatments/brown-noise