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Arbitration-based voice recognition

  • US 10,614,807 B2
  • Filed: 11/01/2018
  • Issued: 04/07/2020
  • Est. Priority Date: 10/19/2016
  • Status: Active Grant
First Claim
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1. A first network microphone device (NMD) comprising:

  • one or more audio processing components configured to cause the first NMD to play back audio content;

    a network interface configured to communicatively couple the first NMD to a second NMD that is configured to play back audio content;

    one or more processors;

    at least one microphone; and

    a tangible, non-transitory, computer-readable medium having instructions stored thereon that are executable by the one or more processors to cause the first NMD device to;

    while operating in a mode in which the first NMD is configured to play back audio content in synchrony with the second NMD;

    detect a voice input via the at least one microphone;

    determine a first measure of confidence associated with the voice input detected by the first NMD;

    receive, from the second NMD via the network interface, an arbitration message comprising (i) a second measure of confidence associated with a voice input detected by the second NMD and (ii) the voice input detected by the second NMD;

    determine that the second measure of confidence is greater than the first measure of confidence;

    based on the determination, perform voice recognition based on the voice input detected by the second NMD, wherein the voice input detected by the second NMD comprises a command to control the synchronous playback of the audio content by the first NMD and the second NMD; and

    after performing voice recognition based on the voice input detected by the second NMD, executing the command to control the synchronous playback of the audio content by the first NMD and the second NMD.

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