ALEXANDRIA, Va., April 21 -- United States Patent no. 12,609,128, issued on April 21, was assigned to ESPRESSIF SYSTEMS (SHANGHAI) Co. LTD. (Shanghai).

"Method for improving far-field speech interaction performance, and far-field speech interaction system" was invented by Xiaozheng Shen (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for improving far-field speech interaction performance, and a far-field speech interaction system are provided. The method comprises: a smart device, during a network configuration process by soundwave signals, acquires a soundwave transmitted by a network configuration auxiliary device, and calculates a spatial acoustic parameter where the smart device is loca...