White noise is a random collection of sounds between the frequencies of 20 to 20,000Hz. For centuries, parents have known that soothing music and lullabies help babies to sleep during both the day and the night – but is white noise really safe for a baby’s delicate ears?
Most people might think that white noise is just a hissing noise or simply static and in a way they would be right. White noise however, has distinct parameters and most notably it is a band of random, but audible sound frequencies in the range of 20 to 20,000 Hz.
Some people swear that they can’t fall asleep without a fan running, others leave a radio or the TV on to help them sleep. In a way, all of these are sound machines, because they help you to both fall asleep and to stay asleep.