"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." You probably know about white noise, or have seen one of those humming machines outside a therapist's ...

The dialogue is called "The Color of Sound," and gallery owner Ellen Slupe's intent is to engage the musicians, the artists and the audience in discussion, sharing what is seen, heard -- and more.

Sound can make it difficult to get sleep and the same goes for the lack of sound. It can be difficult to get sleep if it's too noisy or too quiet. A noise machine that can generate a steady color ...

Lectrofan makes a small bedside noise machine that emits a variety of different "colors" to help you sleep. If you need the whirl of a fan to fall asleep, you're not alone. Many people use white noise ...