ALEXANDRIA, Va., June 19 -- United States Patent no. 12,335,442, issued on June 17, was assigned to Google LLC (Mountain View, Calif.).
"Echo detection" was invented by Alexandre Loiko (Mountain View, Calif.), Marcus Wirebrand (Huddinge, Sweden), Samuel Martin Zackrisson (Mountain View, Calif.), Iva Creusen (Stockholm, Canada), Mans Gustaf Sebastian Ullberg (Mountain View, Calif.), Alessio Bazzica (Jarfalla, Sweden) and Daniel Johansson (Mountain View, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method includes receiving a microphone audio signal and a playout audio signal, and determining a frequency representation of the microphone audio signal and a frequency representation of the playout audi...