US Patent Issued to YEALINK (XIAMEN) NETWORK TECHNOLOGY on April 7 for "Kalman-filter-based adaptive microphone array noise reduction method and apparatus" (Chinese Inventor)

ALEXANDRIA, Va., April 7 -- United States Patent no. 12,598,422, issued on April 7, was assigned to YEALINK (XIAMEN) NETWORK TECHNOLOGY Co. LTD. (Xiamen, China).

"Kalman-filter-based adaptive microphone array noise reduction method and apparatus" was invented by Zhihao Qiu (Xiamen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present application discloses a Kalman-filter-based adaptive microphone array noise reduction method and apparatus. The method includes: acquiring an input signal at each time instance; establishing a superdirective filter model and using it to filter the input signal thereby generating a first reference signal for each time instance; establishing a beamforming filter model ...