White noise is generated from ordinary places like TV or radio static or a noisy air conditioner. Brown noise Brown noise is ...

White noise sounds similar to TV or radio 'static', but constant background noises such as a washing machine, vacuum cleaner, fan or running water also help promote sleep in the same way.

and the constant white noise of, say, a whirring fan, an air conditioner, or the static on an untuned radio or TV. People tend to find this type of noise calming because, by covering all available ...