ALEXANDRIA, Va., June 12 -- United States Patent no. 12,302,056, issued on May 13.

"Vibroacoustic earbud" was invented by Anna Barnacka (Cambridge, Mass.), Martin D Ring (Ashland, Mass.) and John V Cunsolo (Cambridge, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A vibroacoustic earbud ("earbud") is proposed that includes a housing and an infrasonic/vibration sensor. The housing includes a nozzle with a nozzle tip that is configured for positioning within an ear canal of an individual. The sensor is included within the nozzle and detects biosignals including infrasonic signals from a body of the individual in the ear canal. The nozzle tip engages with a wall of the ear canal to provide an earbud seal,...