ALEXANDRIA, Va., March 31 -- United States Patent no. 12,592,229, issued on March 31, was assigned to Amazon Technologies Inc. (Seattle).
"Wakeword detection" was invented by Deepak Yavagal (Mercer Island, Wash.), Ajith Prabhakara (Seattle) and John Gray (Redmond, Wash.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Techniques for implementing multiple wakeword detectors on a single device are described. A digital signal processor (DSP) of the device may implement a wakeword detection component to detect when captured speech includes a wakeword. A companion application installed on the device may implement a wakeword detection component trained using speech of a user of the device. If the DSP's wakeword dete...