Sat., Dec. 23, 2023 People often fall asleep to white noise, but brown and pink noise may be the sleep aides of the future. (Dreamstime) X Email Reddit By Ebony Williams Atlanta Journal-Constitution ...

Where pink and brown noise decreases by dB, blue noise is increased by three decibels per octave, Dr. Hafeez says, which makes higher frequencies (and higher-pitched noises) more prominent.