ALEXANDRIA, Va., March 3 -- United States Patent no. 12,568,328, issued on March 3, was assigned to QUALCOMM Inc. (San Diego).

"Piezoelectric voice accelerometer with back cavity air pressure coupling and multiple resonance peaks" was invented by Shuwan Xue (Lexington, Mass.), Jong Soo Choi (Boston) and Robert John Littrell (Belmont, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and techniques are provided for detecting bone-conducted sound. A voice accelerometer can include a substrate and a plurality of sensing elements associated with a plurality of frequency bands. Each frequency band can be associated with one or more sensing elements of the plurality of sensing elements having a respecti...