ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,732,746, issued on Sept. 8, was assigned to NTT Inc. (Tokyo).

"Sound system" was invented by Masahiro Fukui (Tokyo), Kazunori Kobayashi (Tokyo), Noriyoshi Kamado (Tokyo) and Ryotaro Sato (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an acoustic system for a user who uses a seat of an aircraft, an automobile, or the like, which reproduces a sound that cannot be heard by surrounding users without using earphones or headphones. An acoustic system including: a directivity control device including at least one directivity control unit that generates a first processed acoustic signal from a first acoustic signal and generates a second proc...