Research shows (Spencer, Moran, Lee & Talbert, 1990) that newborn baby’s who hear white noise fall asleep more easily (80% within 5 minutes) than baby’s who do not hear white noise (25% within 5 minutes). In addition to white noise, heartbeat sound takes stress away from baby’s, which causes them to calm down and sleep better.
That’s not as strange as one might think. Baby’s feel warm, safe and secure in the womb. They can listen to the sounds of their mother’s heartbeat and the sound of blood flowing through her body, white noise. The transition from mum’s belly to the cold and quiet outside world can be a big transition for baby’s. Little ones are often uneasy when they’re not close to their mother and have difficulties falling asleep. When you let them hear the sounds that make them remember the nice time before birth, they feel more safe and they feel close to their mother. They will calm down and fall asleep better.