What is white noise?
White noise can be described as a sound similar to radio or TV static or a humming air conditioner. Meghan Neal writes in The Atlantic that white noise is “a mixture of all the frequencies humans can hear (20 Hz to 20,000 Hz), fired off randomly with equal power at each — like 20,000 different tones all playing at the same time”.1
Because it covers all frequencies white noise can be used to mask background noises and help people, especially babies, fall asleep more easily and more deeply. It may also help people stay in deep sleep longer as it can mask loud, jarring noises which may otherwise wake a baby or adult out of a deep sleep. Think of all those toddlers & preschoolers jumping about whilst a baby is sleeping and a caregiver trying their very hardest to keep them quiet. White noise can help to mask those sounds, because it contains all frequencies at an equal intensity. Using white noise means the baby can stay asleep longer and caregivers don’t have to stress so much about keeping the bigger little ones quiet. Now that’s a win in our eyes!