When the baby isn't sleeping, you aren't either. We gave our most popular sound machine a mommy makeover with a modern look and improved speaker quality. The Sounds for Silence Nursery Sound Machine quickly soothes crying babies with the option of 6 calming sounds and 6 lullabies, so you can sneak out of the nursery without worrying about the creaky floor. When tested, the sound machine had more than a 90% success rate of calming crying babies. Sound machine features custom sounds developed by Pediatrician Dr. Harry Zehnwirth, volume control, and an MP3 hookup so you can play your own music. Turn it on and you'll both get some rest.