Controlling the listening horizon of an automatic speech recognition system for use in handsfree conversational dialogue
First Claim
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1. A hand held mobile system comprising:
- at least one processor;
a plurality of components executable on the at least one processor, the plurality of components comprising;
a dialog component to engage in dialog with a user, the dialog component determining whether an utterance of the user recognized with a confidence level greater than a threshold is associated with a pattern of dysfluency or reflection; and
an application component that determines that a user desires to engage in a dialog, the application turning on the dialog component for a listening horizon, the length of the listening horizon is a function of the subject matter of the dialog, wherein the listening horizon is extended when the utterance is determined to be associated with a pattern of dysfluency or reflection.
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Abstract
Conversational dialog with a computer or other processor-based device without requiring push-to-talk functionality. In one embodiment, a computer-implemented method first determines that a user desires to engage in a dialog. Based thereon the method turns on a speech recognition functionality for a period of time referred to as a listening horizon. Upon the listening horizon expiring, the method turns off the speech recognition functionality.
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Citations
20 Claims
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1. A hand held mobile system comprising:
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at least one processor; a plurality of components executable on the at least one processor, the plurality of components comprising; a dialog component to engage in dialog with a user, the dialog component determining whether an utterance of the user recognized with a confidence level greater than a threshold is associated with a pattern of dysfluency or reflection; and an application component that determines that a user desires to engage in a dialog, the application turning on the dialog component for a listening horizon, the length of the listening horizon is a function of the subject matter of the dialog, wherein the listening horizon is extended when the utterance is determined to be associated with a pattern of dysfluency or reflection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A computer implemented method comprising:
with at least one processor, performing steps comprising; determining that a user desires to engage in a dialog; turning on a speech recognition function with a listening horizon, the length of the listening horizon is initially set as a function of the subject matter of the dialog; listening for an utterance of the user until an utterance is detected or the listening horizon expires; determining whether the detected utterance is recognized with a confidence above a threshold; when the utterance is recognized with a confidence above the threshold; determining whether the utterance represents a deliberation; and when the utterance does not represent a deliberation, turning off the speech recognition function; and when the utterance represents a deliberation, resuming listening for an utterance until the listening horizon expires; and when the utterance is not recognized with a confidence above the threshold; when a number of utterances have been received since the speech recognition function was turned on exceeds a second threshold, outputting an indication of a hearing difficulty and turning off the speech recognition function; when the number of utterances that have been received since the speech recognition function was turned on is below the second threshold, resuming listening for an utterance until the listening horizon expires. - View Dependent Claims (18, 19)
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20. A mobile device comprising:
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at least one processor; means for determining that a user desires to engage in a dialog; and means, executable on the at least one processor, the means comprising; means for determining whether an utterance of the user recognized with a confidence level greater than a threshold is associated with a pattern representative of user deliberation; means for turning on a speech recognition functionality for a listening horizon upon determining that the user desires to engage in a dialog, the length of the listening horizon is a function of the subject matter of the dialog; means for extending the listening horizon when the recognized utterance is associated with a pattern representative of user deliberation; and
,means for turning off the speech recognition functionality after the listening horizon has expired.
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Specification