what is green noise

Green noise is a type of noise that is a variant of white noise, which amplifies the frequencies in the middle of the range of all the sound frequencies the human ear can hear. Green noise is around a frequency of 500 Hz and contains many of the sound frequencies associated with real-world nature, like waterfalls and rivers. It is a technique that has upsides beyond just bedtime, as it can help provide a calming, more relaxed feeling right before sleep. Green noise is usually created using recorded natural soundscapes or sounds of nature, such as waves on the beach or gentle rain. It is gaining popularity on social media as a useful tool to help people fall asleep faster. While research into the effects of green noise on sleep is limited, it is being touted as helpful for sleep and is gaining popularity.