The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 28, 2021
Filed:
Jun. 26, 2019
Amazon Technologies, Inc., Seattle, WA (US);
Ming Sun, Winchester, MA (US);
Thibaud Senechal, Somerville, MA (US);
Yixin Gao, Cambridge, MA (US);
Anish N. Shah, Bedford, MA (US);
Spyridon Matsoukas, Hopkinton, MA (US);
Chao Wang, Newton, MA (US);
Shiv Naga Prasad Vitaladevuni, Belmont, MA (US);
Amazon Technologies, Inc., Seattle, WA (US);
Abstract
A system processes audio data to detect when it includes a representation of a wakeword or of an acoustic event. The system may receive or determine acoustic features for the audio data, such as log-filterbank energy (LFBE). The acoustic features may be used by a first, wakeword-detection model to detect the wakeword; the output of this model may be further processed using a softmax function, to smooth it, and to detect spikes. The same acoustic features may be also be used by a second, acoustic-event-detection model to detect the acoustic event; the output of this model may be further processed using a sigmoid function and a classifier. Another model may be used to extract additional features from the LFBE data; these additional features may be used by the other models.