Turn-taking confidence

  • US 7,809,569 B2
  • Filed: 12/22/2005
  • Issued: 10/05/2010
  • Est. Priority Date: 12/22/2004
  • Status: Active Grant
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First Claim
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1. A method for managing interactive dialog between a machine and a user comprising:

  • providing audio output comprising speech to the user from the machine, said audio output comprising a sequence of one or more phrases, wherein each phrase is followed by a yield zone, said yield zone characterized by an absence of speech provided from the machine;

    receiving digitized audio data comprising speech audio input at the machine wherein said speech audio input is generated from the user or from an environment of the user;

    determining said audio input comprises speech audio input generated from the user;

    determining a time at which said speech audio input begins;

    determining an onset likelihood value based on the time wherein the onset likelihood has a first value if the time occurs during a given phrase associated with the one or more phrases and a second value if the time occurs during a given yield zone associated with the one or more yield zones;

    determining a confidence value from the audio input, wherein the confidence value is dependent upon the onset likelihood value and a recognition result from a speech recognition module; and

    providing an audio response from the machine to the user based on the confidence value.

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