ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,505,823, issued on Dec. 23, was assigned to Goertek Technology Co. Ltd. (Qingdao, China).
"Open-field far-field silencing speaker apparatus, head-mounted device and signal processing method" was invented by Jinbao Li (Shandong, China) and Jinguo Zhang (Shandong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a speaker device, head-mounted device, and signal processing method. The speaker device includes: a first housing and a first speaker unit, the first speaker unit being provided inside the first housing and separating the first housing into a first front sound cavity and a first rear sound cavity; the first hous...