US Patent Issued to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT on Feb. 17 for "Sound adjustment method and sound adjustment device" (Japanese Inventor)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,555,559, issued on Feb. 17, was assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT Co. LTD. (Osaka, Japan).

"Sound adjustment method and sound adjustment device" was invented by Tsukasa Nakashima (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A sound adjustment method of an aircraft is provided. The sound adjustment method includes acquiring a sound signal; acquiring flight state information of the aircraft; amplifying the sound signal having a first frequency or lower when the flight state information indicates ascending or descending of the aircraft; and amplifying the sound signal having a second frequency or lower when the flight s...