Pink noise is often promoted as a way to help people fall asleep faster and block out other bothersome sounds that can disturb our sleep - but researchers say it might not be as healthy as it seems.
The ambient and steady, static-like tone from pink noise is similar to tapes of heavy rainfall or ocean waves, and aims to soothe the brain into a deep slumber. Pink noise contains lower frequencies of sound than white noise – which is the same as TV or radio static – and there are machines that provide people with both kinds of noise.
