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Controlling the listening horizon of an automatic speech recognition system for use in handsfree conversational dialogue

  • US 6,988,072 B2
  • Filed: 07/07/2004
  • Issued: 01/17/2006
  • Est. Priority Date: 05/17/1999
  • Status: Expired due to Fees
First Claim
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1. A computer-implemented method comprising:

  • performing a cost-benefit analysis to determine whether engaging in a dialog comprises a highest expected utility action;

    determining that a user desires to engage in a dialog;

    turning on a speech recognition functionality for a listening horizon;

    determining a length of the listening horizon;

    extending the listening horizon upon detection of a user utterance; and

    turning off the speech recognition functionality after the listening horizon has expired.

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