It is still not clear what science operates around white noise machines, but they have proved to help people sleep and remain asleep throughout the night. A study of newborn babies reveals that white noise significantly reduced the amount of time it took study subjects to fall asleep. These machines produce calming and soothing sounds that block out environmental noise that could distract your sweet sleep. What you continuously hear are the sounds the machine produces at the same volume and pitch to calm down and rest.