Voice trigger for a digital assistant

  • US 10,199,051 B2
  • Filed: 02/07/2014
  • Issued: 02/05/2019
  • Est. Priority Date: 02/07/2013
  • Status: Active Grant
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First Claim
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1. A method for operating a voice trigger, performed at an electronic device including one or more processors and memory storing instructions for execution by the one or more processors, the method comprising:

  • determining, based on comparing an amount of light detected on at least a front surface of the electronic device to a threshold amount of light, whether to operate the voice trigger in a standby mode or in a listening mode;

    in accordance with a determination to operate the voice trigger in the listening mode;

    receiving a sound input;

    generating an input representation of the sound input, wherein the input representation represents audio signatures of the sound input;

    determining whether at least a portion of the sound input corresponds to a predetermined type of sound;

    upon a determination that at least a portion of the sound input corresponds to the predetermined type, determining whether the sound input includes predetermined content based on comparing of the input representation of the sound input to one or more reference representations;

    upon a determination that the sound input includes the predetermined content, generating a control signal comprising instructions to initiate a speech-based service; and

    initiating the speech-based service based on the control signal; and

    in accordance with a determination to operate the voice trigger in the standby mode, forgoing initiating the speech-based service based on received sound input.

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