ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,771,306, issued on Oct. 20, was assigned to AAC Technologies Pte. Ltd. (Singapore).

"Signal processing system and electric device" was invented by Juha Backman (Tampere, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a signal processing system and electric device. The signal processing system includes: an input signal module, a displacement model, a filter coefficient generation module, a group delay compensation module, an adjustable equalizer, an amplifier and an audio converter. The input signal module is connected to the group delay compensation module and the displacement model, respectively; the displacement model is connected...