ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,513,448, issued on Dec. 30, was assigned to FOCAL JMLAB (La Talaudiere, France).
"Audio headset with active noise reduction" was invented by Shahin Rezaei (Saint-Etienne, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to an active noise-cancelling audio headphones having two circum-aural earpieces, comprising a partition designed to face an ear; said partition incorporating at least one vent passing through said partition so as to generate intentional leaks having a length greater than 1.5 mm and a width selected in such a way that there are either a ratio between said length and said width is less than or equal to 8:1 if a ...