The best sounds for baby sleep
Finding the right background sound can transform your baby sleep experience. This activity engages your Infant Sleep Onset + Parental Sanity cognitive systems, which respond best to specific types of ambient sound.
Research says: Pink noise during sleep extends deep sleep (slow-wave sleep) by 25% and improves next-day memory recall. Pink noise matches the brain's own sleep oscillation frequency, reinforcing the slow waves responsible for memory consolidation. A separate ICU study found pink noise reduced time to fall asleep by 40%.
— Northwestern University / Frontiers in Human Neuroscience (2017)
Sons recommandés
white noise
The most studied sound for infant sleep. White noise mimics the broadband sound environment of the womb (blood flow, maternal heartbeat, digestive sounds). AAP recommends below 50 dB.
Recommended: 40-50 dBpink noise
Gentler than white noise due to reduced treble energy. For extended use (naps, overnight), pink noise is more comfortable for both baby and parent.
Recommended: 35-45 dBrain sounds
Natural sound with a pink-noise-like frequency distribution. Parents who find synthetic noise unpleasant often prefer rain as a more natural-sounding alternative.
Recommended: 35-45 dBEssayer maintenant
Listen on Softly
Conseil pro
Volume must stay below 50 dB — measure with a phone app held at the baby's ear level. Place the sound source at least 1 metre (3 feet) from the crib, never inside it. Use a timer; don't play sound continuously for all sleep periods.
Questions fréquentes
Is white noise safe for babies?
At appropriate volume (below 50 dB — roughly quiet conversation level) and distance (1 metre+ from the crib), yes. The AAP cautions against loud white noise machines placed close to the crib. Measure volume at the baby's ear level, not at the device. Use a timer rather than playing all night.
What does research say about sounds for baby sleep?
Pink noise during sleep extends deep sleep (slow-wave sleep) by 25% and improves next-day memory recall. Pink noise matches the brain's own sleep oscillation frequency, reinforcing the slow waves responsible for memory consolidation. A separate ICU study found pink noise reduced time to fall asleep by 40%. (Papalambros et al., Northwestern University / Frontiers in Human Neuroscience, 2017)
What volume should I use for baby sleep?
For baby sleep, set your volume to 40-50 dB. This range is based on acoustic research — loud enough to mask distracting noise, quiet enough to avoid auditory fatigue during extended listening.