How loud is dangerously loud?
How loud is dangerously loud? Sound is measured in units called decibels. Sounds at or below 70 A-weighted decibels (dBA) are generally safe. Long or repeated exposure to sounds at or above 85 dBA can cause hearing loss.
Is 70 dB Loud for sleeping?
White noise can come from sleeping with a fan, sound conditioner, white noise machine, air purifier or other soothing sound. However, be mindful of the volume especially for babies — a white noise machine shouldn't be too loud. Experts vary, but below 50. View source to 65 decibels or so is considered maximum.