Sleep
White Noise, Lullabies, and Sleep Sounds: What Helps
5 min read
Sound is the cheapest sleep intervention available and the one most likely to be used slightly wrong. A machine that masks the neighbor's dog is doing something genuinely useful; a playlist that keeps rolling for three hours is doing something else.
Here's what each type of sound is actually for.
What white noise is for
Masking, not sedation. Its job is to flatten the difference between a silent room and a sudden noise — a door, a car, a sibling, a bin lorry at 5:40 — so a child in light sleep doesn't surface completely. If you live somewhere quiet and nothing wakes your child, you probably don't need it.
It's most useful in flats, on busy streets, in shared rooms, and during any period of early-morning waking caused by outside noise.
Volume and placement
- Roughly the level of a running shower, not louder — if you have to raise your voice over it, it's too loud.
- Place it across the room, never in or beside the cot.
- Continuous, low-pitched sound works better than anything with a pattern; rain and fans do well, ocean waves that swell and fade less so.
- Leave it on all night rather than on a short timer, since the point is to cover disturbances in the second half of the night.
Music, lullabies, and stories
Music is a wind-down tool rather than a sleep-through tool. Something slow and familiar during pajamas and stories helps mark the transition; music with a tune to follow, lyrics to listen to, or dynamic changes keeps an interested child engaged.
Audio stories are the same: excellent for settling, best set to finish. A story that ends and leaves the room quiet lets a child drift off into silence; a queue that plays for two hours means they never get a quiet room to fall asleep in.
The crutch question
A sleep association only causes problems if it can't be reproduced when your child wakes at 2am. White noise that runs all night reproduces itself, which is why it's rarely an issue. Being rocked, or a parent lying down next to them, doesn't — which is why those are.
By that test, sound is one of the safer associations to build. If you do want to remove it later, drop the volume gradually over a week or two rather than switching it off one night.
Silence is also fine
None of this is required. Plenty of children sleep best in a quiet room and find any added sound irritating. It's worth trying, worth keeping if it helps, and worth dropping without guilt if it doesn't.
Common questions
- Is white noise good for toddlers?
- It helps when there's noise to mask — a busy street, a flat, a shared room, or early-morning disturbances. In an already quiet house it often adds nothing.
- How loud should white noise be?
- Roughly the level of a running shower, placed across the room rather than near the cot. If you need to raise your voice over it, turn it down.
- Should bedtime music or stories play all night?
- Better to set them to finish. A story or track that ends lets your child fall asleep into a quiet room, whereas continuous playback means the room never actually goes quiet. White noise is the exception, since it's meant to run through the night.
Tonight's story, ready to read
Original illustrated bedtime stories for ages 2+, by a professional narrator or in your own recorded voice. Some are free — no account needed.