White noise tends to remain at the same volume, even if the frequency changes. Pink noise, on the other hand, becomes quieter as the frequency increases. Pink noise is often referred to as 1 / f noise. The name derives from the fact that pink noise becomes quieter in inverse proportion to the frequency  ("f"). Pink noise sounds more like ocean noise due to the alternation of high and low frequencies. Additionally, pink noise is said to have the effect of prolonging deep sleep phases and improving memory performance. Brown noise, unlike pink noise, sounds more like stormy weather and therefore depends a lot on the listener's preference. Examples are: thunderstorm, rain shower, fireplace, distant storm. The name does not derive from the color, but from the Scottish botanist Robert Brown. Both pink and brown noise can help counteract tinnitus. Just like white noise, pink noise can be reproduced through a generator. There are numerous applications, online audio games on Youtube and MP3 files for different sounds, tones and noises. So everyone can try the different noises and find the one they like best.