Patent ID: 11961514
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method comprising:
receiving a plurality of audio frames representing audio captured by a device;
determining a first subset of the plurality of audio frames;
determining a second subset of the plurality of audio frames, wherein the second subset is different from the first subset but includes at least one audio frame from the first subset;
processing, using a convolutional recurrent neural network encoder (CRNN) configured to determine audio features in the plurality of audio frames, the first subset to generate first hidden state data of the CRNN;
determining preliminary embedding data using at least the first hidden state data;
processing, using the CRNN, the second subset and the first hidden state data to generate second hidden state data of the CRNN;
determining interim embedding data using the second hidden state data and the preliminary embedding data;
determining, using at least the interim embedding data, final embedding data representing audio features representing the audio;
processing the final embedding data with respect to stored data to determine results data, the stored data representing audio of an event; and
determining, based at least in part on the results data, that an instance of the event has occurred.