US Patent Issued to Meta Platforms Technologies on Oct. 14 for "Second degree of freedom speaker for cavity resonance cancellation" (California Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,445,763, issued on Oct. 14, was assigned to Meta Platforms Technologies LLC (Menlo Park, Calif.).

"Second degree of freedom speaker for cavity resonance cancellation" was invented by Simon Porter (San Jose, Calif.) and Guangxin Tang (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A speaker produces acoustic frequencies within a housing that outputs the acoustic frequencies to a port. The produced frequencies travel through a cavity to the port which may have a cavity resonance that amplifies certain frequencies, affecting the frequency sensitivity of the speaker. To mitigate the cavity resonance, the speaker includes a membrane with reg...