ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,477,290, issued on Nov. 18, was assigned to Tymphany Worldwide Enterprises Ltd. (Grand Cayman, Cayman Islands).

"Calibration of a loudspeaker system" was invented by Dimitris Grimanis (Taipei, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for calibrating a loudspeaker system in an acoustic environment. The method comprises steps of providing a local frequency response based on a recorded test signal and providing a target frequency response. A difference frequency response is established based on a difference between the local frequency response and the target frequency response. A list of exclusion frequency ra...