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:
Jan. 13, 2026
Filed:
Jun. 26, 2024
Google Llc, Mountain View, CA (US);
Jilong Wu, Mountain View, CA (US);
Yiteng Huang, Mountain View, CA (US);
Google LLC, Mountain View, CA (US);
Abstract
A method to detect a hotword in a spoken utterance includes receiving a sequence of input frames characterizing streaming multi-channel audio. Each channel of the streaming multi-channel audio includes respective audio features captured by a separate dedicated microphone. For each input frame, the method includes processing, using a three-dimensional (3D) single value decomposition filter (SVDF) input layer of a memorized neural network, the respective audio features of each channel in parallel and generating a corresponding multi-channel audio feature representation based on a concatenation of the respective audio features. The method also includes generating, using sequentially-stacked SVDF layers, a probability score indicating a presence of a hotword in the audio. The method also includes determining whether the probability score satisfies a threshold and, when satisfied, initiating a wake-up process on a user device.