US Patent Issued to TENCENT AMERICA on Oct. 20 for "Dual-filter Kalman method for acoustic feedback cancellation in hands-free karaoke environments" (California, Ohio Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,770,635, issued on Oct. 20, was assigned to TENCENT AMERICA LLC (Palo Alto, Calif.).

"Dual-filter Kalman method for acoustic feedback cancellation in hands-free karaoke environments" was invented by Hao Zhang (Columbus, Ohio) and Dong Yu (Palo Alto, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method performed by at least one processor includes receiving an output microphone signal generated by a non-directional microphone, the output signal comprising a user voice signal and mixture signal comprising an audio playback signal and a voice reference signal of the user voice, the mixture signal output from a loudspeaker; inputting the output mic...