Sound can significantly influence sleep by creating a relaxing environment, masking disruptive noises, and promoting a sense of security.
Nature sounds like rain, rustling leaves, or ocean waves have a calming effect, reducing stress and lowering heart rate and blood pressure. These sounds can evoke a sense of safety, helping the brain relax into sleep.
White noise (e.g., a fan, static) and pink noise (e.g., rainfall, ocean waves) create a consistent auditory backdrop that drowns out sudden, jarring sounds like traffic or a barking dog. Studies suggest pink noise, in particular, can enhance deep sleep and memory retention.