ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,238,475, issued on Feb. 25, was assigned to Apple Inc. (Cupertino, Calif.).
"Acoustic resonators for microphones" was invented by Justin D. Crosby (Cupertino, Calif.), Kevin M. Froese (Madison, Wis.) and Tzu Hung Huang (Campbell, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects of the subject technology relate to electronic devices having microphones. An electronic device may include a microphone and a resonator for the microphone. The resonator may be formed in a device structure that is spatially separated from the microphone. The resonator may be formed in an interior wall of a housing of the electronic device, or in a support structure ...