ALEXANDRIA, Va., May 5 -- United States Patent no. 12,620,400, issued on May 5, was assigned to Meta Platforms Technologies LLC (Menlo Park, Calif.).

"Detection and suppression of howl speech signal" was invented by Sarmad Aziz Malik (Redmond, Wash.), Syavosh Zadissa (Bothell, Wash.) and Xiaofei Chen (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system suppresses howl in a device including microphones and speakers, for example, an artificial reality headset. A speaker of the device presents audio content. The audio content presented by the speaker is received by a microphone of the device thereby creating a howl in certain situations. The system detects the presence of the howl in a region of t...