Patent ID: 11929064
Assignee: GOOGLE LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 10:
11. A system comprising:
data processing hardware of a user device; and
memory hardware in communication with the data processing hardware, the memory hardware storing instructions that when executed on the data processing hardware cause the data processing hardware to perform operations comprising:
obtaining a plurality of first training samples comprising utterances that contain a keyword spoken within a fixed duration of time, each first training sample comprising a respective sequence of input frames that each contain respective audio features characterizing phonetic components of the keyword;
obtaining a plurality of second training samples comprising additional utterances that do not contain the keyword spoken within the fixed duration of time; and
training an end-to-end neural network model on the plurality of first training samples and the plurality of second training samples by, for each first training sample:
applying a first binary label to a portion of the input frames in the respective sequence of input frames that contain the respective audio features characterizing the phonetic components at or near an end of the keyword; and
applying a second binary label to a remaining portion of the input frames in the respective sequence of input frames.