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US 10,192,546 B1Granted
Pre-wakeword speech processing
AssigneeAmazon Technologies, Inc.
InventorsKurt Wesley Piersol, Gabriel Beddingfield
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Abstract
A system for capturing and processing portions of a spoken utterance command that may occur before a wakeword. The system buffers incoming audio and indicates locations in the audio where the utterance changes, for example when a long pause is detected. When the system detects a wakeword within a particular utterance, the system determines the most recent utterance change location prior to the wakeword and sends the audio from that location to the end of the command utterance to a server for further speech processing.
Claims17
A computer-implemented method, comprising:
- receiving audio;
- storing, in non-transitory memory, audio data representing the audio;
- determining a first location in the audio data that includes a first amount of non-speech audio data;
- determining a wakeword at a second location in the audio data, the audio data including non-wakeword speech between the first location and the second location;
- determining a third location in the audio data that includes a second amount of non-speech audio data, the third location being after the second location in the audio data;
- and
- selecting, for speech processing, a portion of the audio data starting with the first location and ending with the third location, the portion of the audio data comprising at least the non-wakeword speech.
4 more elements
A computing device, comprising:
- at least one processor;
- and
- at least one memory including instructions that, when executed by the at least one processor, cause the computing device to:
- receive audio;
- store, in non-transitory memory, audio data representing at least some of the audio;
- determine a first location in the audio data that includes a first amount of non-speech audio data;
- determine a wakeword at a second location in the audio data, the audio data including non-wakeword speech between the first location and the second location;
- determine a third location in the audio data that includes a second number amount of non-speech audio data, the third location being after the second location in the audio data;
- and
- determine, for speech processing, a portion of the audio data starting with the first location and ending with the third location, the portion of the audio data comprising at least the non-wakeword speech.
7 more elements
Dependencies are inferred from the claim text.