US Patent Issued to Panasonic Automotive Systems on May 19 for "Active noise reduction device, mobile object, and active noise reducing method" (Japanese Inventor)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,633,279, issued on May 19, was assigned to Panasonic Automotive Systems Co. Ltd. (Kanagawa, Japan).

"Active noise reduction device, mobile object, and active noise reducing method" was invented by Shotaro Ueno (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An active noise reduction device includes a reference-signal generator that generates a first reference signal having a first frequency that corresponds to the engine speed of an engine, an adaptive filter that outputs a cancellation signal used to output cancellation sound by applying a filter factor to the first reference signal, the filter factor being successively updated based on an ...