Why brown noise soothes babies
The womb is a surprisingly noisy place, dominated by low-frequency sounds like blood flow and the mother's heartbeat. Brown noise recreates that deep, constant character, which can trigger a calming reflex in newborns and mask the household sounds that might otherwise wake them.
Baby safety: volume and distance
Safety comes down to volume and distance. Pediatric guidance suggests keeping infant sound machines below about 50 decibels and placing them well away from the crib — at least 2 metres (7 feet), never inside or on the crib.
- Keep the volume low — around 50 dB or less.
- Place the device at least 2 metres from the crib.
- Use a timer or turn it off once your baby is asleep.
- Never put a phone or speaker inside the crib.