Ever caught yourself vibing to a slot machine’s beat? That’s no accident. Today’s slots feature full-on sound design—hip-hop beats, emotional cues, and psychological hooks—all engineered to keep you ...

“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 ...