ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,388,481, issued on Aug. 12.
"Background noise recorder" was invented by Joonhoi Hur (Sunnyvale, Calif.), Jochen Schrattenecker (Alberndorf in der Riedmark, Austria), Bin Xiao (San Ramon, Calif.), Andre Hanke (San Jose, Calif.), Harald Pretl (Schwertberg, Austria), Rastislav Vazny (Saratoga, Calif.), Bernhard Sogl (Unterhaching, Germany) and Andreas Menkhoff (Oberhaching, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electronic device may include wireless circuitry with a transmit antenna that transmits signals and a receive antenna that receives reflected signals. The wireless circuitry may detect a range between the device and an external o...