Salon

Wait, is white noise harmful for sleep now? How these bland vibes can be bad for baby — and you
July 23, 2023 – "there is a rise in research and scientists showing that white noise could potentially be negatively affecting human brain development, especially in infancy."

Futurity
Sounds Sleeping Babies Hear Can Boost Language Development

Medical Xpress
Infant exposure to brief auditory cues can support language development