ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,726,756, issued on Sept. 1, was assigned to Google LLC (Mountain View, Calif.).
"Impedance-tuned microphone tunnel" was invented by Yuting Tsai (New Taipei City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An impedance-tuned microphone tunnel for an electronic device is disclosed. The impedance-tuned microphone tunnel includes a ring-like structure having a central opening positioned within a microphone tunnel of an electronic device. The central opening of the ring-like structure has a diameter that is smaller than diameters of other central openings within the microphone tunnel. The ring-like structure may be used to tune an impedance of the...