According to research by the National Sleep Association - White noise works by reducing the difference between background sounds and a "peak" sound, like a door slamming, giving you a better chance to sleep through it undisturbed. If you have difficulty falling asleep or staying asleep, creating a constant ambient sound could help mask activity from inside and outside the house. In your bedroom, white noise can be created by a sound conditioner, a fan or an air purifier, anything that is a consi