So if the birds or sirens are keeping you up at night, you can “block out” their sounds by sleeping next to a white noise machine. The quiet humming of white noise also lulls you to sleep, keeping ...

“The sound machine can generate any of several types of sound, from nature [or] music,” Dr. Cory Portnuff, an audiologist at the University of Colorado Health’s Hearing and Balance Clinic, says. In ...