ALEXANDRIA, Va., June 12 -- United States Patent no. 12,302,057, issued on May 13, was assigned to Apple Inc. (Cupertino, Calif.).
"Adaptive virtual microphone for earbuds" was invented by Hanchi Chen (Cupertino, Calif.), Martin Kuster (Los Gatos, Calif.), Tom-Davy W. Saux (Los Gatos, Calif.) and Victoria Chiu (Emerald Hills, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are systems and methods for adaptive noise cancellation (ANC) at a virtual microphone located at the eardrum of a wearer of an earphone. The techniques estimate the level of leakiness of ambient noise in the earphone from the magnitude of the gain of the transfer function of the feed forward loop filter of the ANC. Based on...