Yes: white noise is generally considered safe for babies when you keep it quiet and across the room. The risk researchers have flagged isn’t the steady shhh itself. It’s volume and proximity, because some sound machines and phones can get surprisingly loud. If you want the exact numbers, go straight to how loud white noise should be for a baby.
This page sits within our sleep science and safety section and covers the hearing question, the development question, dependency, and a simple checklist you can follow tonight.
What did the 2014 Pediatrics study find?
The study most often cited about white noise machine dangers was published in Pediatrics, the AAP’s journal. Hugh and colleagues (2014) played 14 infant sleep machines at maximum volume and measured them at 30, 100 and 200 cm, adjusting for the size of a 6-month-old’s ear canal.
- At 30 cm, all 14 machines exceeded 50 dBA, the recommended noise limit for infants in hospital nurseries.
- Three machines exceeded 85 dBA, a level that, over more than 8 hours, exceeds occupational noise limits for adults and risks noise-induced hearing loss.
Two details matter. First, the machines were tested at maximum volume, which most parents don’t use. Second, sound level drops as you move away, which is why distance is one of the simplest safety tools you have. The study didn’t show that babies were harmed. It showed that the devices can be loud enough to be a concern.
Can white noise damage a baby’s hearing?
At sensible levels, it’s very unlikely. Hearing damage from noise depends on how loud a sound is and how long you’re exposed to it. The U.S. National Institute on Deafness and Other Communication Disorders explains that sounds at or below 70 dBA are unlikely to cause hearing loss even after long exposure, while long or repeated exposure at or above 85 dBA can.
Babies have smaller ear canals, which can make sound slightly louder at the eardrum, and they can’t move away or tell you it’s too loud. That’s why the guidance for infants is stricter than for adults: around 50 dB or lower, roughly the level of moderate rainfall.
| Setting | Approximate level at baby’s ear | Hearing risk |
|---|---|---|
| Phone or machine across the room, low volume | About 50 dB or lower | Very low |
| Machine on the crib rail, high volume | Can exceed 85 dBA (2014 study) | A real concern over hours |
| Normal conversation | About 60 dBA (ASHA) | Not harmful, but louder than needed for sleep |
Is white noise bad for brain development?
There’s no human study showing that quiet white noise harms a baby’s development. The concern comes from animal research. In a well-known study, Chang and Merzenich (2003) raised rat pups in continuous, moderate-level noise and found that the organization of their auditory cortex was delayed. Researchers studying preterm babies have also raised questions about constant high-frequency noise in neonatal intensive care units (Lahav & Skoe, 2014).
Rat pups living in round-the-clock noise are very different from a baby hearing soft sound for part of the night. Still, the research gives a sensible principle: babies learn from structured sounds like voices and music, so steady noise should be low and limited to sleep. Talk, sing and let your baby hear the ordinary sounds of home during awake time.
Can babies get dependent on white noise?
Babies can come to expect white noise as part of falling asleep, the same way they expect a feed, a song or a dark room. That’s a sleep association, not an addiction, and it isn’t harmful. Some parents see it as a plus: a portable cue that travels well to grandparents’ houses and hotel rooms.
If you’d rather not rely on it long term, taper gradually by lowering the volume and shortening the timer over a week or two. Our guide to weaning baby off white noise has a step-by-step plan.
Should white noise be on all night?
It can be, at a low volume and at a distance, and many families do this to smooth over noises between sleep cycles. Others prefer a timer with a fade-out, which limits total exposure. Both are reasonable. What isn’t reasonable is loud sound all night next to the crib. We weigh both approaches in should white noise be on all night.
A safe-use checklist for white noise
How Baby Mantra supports safe use
We built Baby Mantra around the rules above. Per-sound volume lets you keep each sound low, even in a mix of up to three sounds. The sleep timer runs from 15 minutes to 2 hours and fades out gently, so there’s no sudden silence. Dim night mode keeps the screen low while you’re in the room, and lock-screen controls let you pause or stop playback without unlocking your phone. It works offline and needs no account.
If you’d like to hear the sound itself, our page on white noise for babies has a preview and mixing ideas.
Want a phone-based setup? Our guide to using a white noise app on iPhone covers airplane mode, charging and placement.
Sources
- Hugh SC, Wolter NE, Propst EJ, et al. Infant sleep machines and hazardous sound pressure levels. Pediatrics, 2014.
- American Academy of Pediatrics. Sleep-Related Infant Deaths: Updated 2022 Recommendations for Reducing Infant Deaths in the Sleep Environment. Pediatrics, 2022.
- Chang EF, Merzenich MM. Environmental noise retards auditory cortical development. Science, 2003.
- Lahav A, Skoe E. An acoustic gap between the NICU and womb. Frontiers in Neuroscience, 2014.
- National Institute on Deafness and Other Communication Disorders. Noise-Induced Hearing Loss.
- American Speech-Language-Hearing Association. Noise and Hearing Loss Prevention.
