Speech recognition with feedback from natural language processing for adaptation of acoustic models
First Claim
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1. A speech processing apparatus comprising:
- speech recognition means for performing speech recognition on input speech to produce a speech recognition result using acoustic models; and
natural-language processing means for performing natural language processing on said speech recognition result, said natural-language processing means including feedback means for feeding back information obtained as a result of the natural language processing performed on the speech recognition result to said speech recognition means, said feedback information including adaptation zones, wherein said speech recognition means comprises adaptation process means for processing the information fed back from said feedback means to adapt the acoustic models so that said speech recognition means produces the speech recognition result with higher precision than when said adaptation process means is not used.
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Abstract
A speech recognition unit performs speech recognition on input speech based on models, such as HMMs, and supplies a speech recognition result to a dialog management unit. The dialog management unit forms a reply to the speech recognition result. In this case, the dialog management unit detects zones in which the speech recognition result is correct based on the speech recognition result and the associated reply, and feeds them back to the speech recognition unit. Then, the speech recognition unit performs on-line adaptation of the models based on the speech of the correct zones fed back from the dialog management unit and the associated speech recognition result.
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Citations
8 Claims
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1. A speech processing apparatus comprising:
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speech recognition means for performing speech recognition on input speech to produce a speech recognition result using acoustic models; and
natural-language processing means for performing natural language processing on said speech recognition result, said natural-language processing means including feedback means for feeding back information obtained as a result of the natural language processing performed on the speech recognition result to said speech recognition means, said feedback information including adaptation zones, wherein said speech recognition means comprises adaptation process means for processing the information fed back from said feedback means to adapt the acoustic models so that said speech recognition means produces the speech recognition result with higher precision than when said adaptation process means is not used. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A speech processing method comprising:
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a speech recognition step of performing speech recognition on input speech to produce a speech recognition result using acoustic models; and
a natural-language processing step of performing natural language processing on said speech recognition result, said natural-language processing step including a feedback step of feeding back information obtained as a result of the natural language processing performed on the speech recognition result to said speech recognition step, said feedback information including adaptation zones, wherein said speech recognition step comprises an adaptation process step of processing the information fed back from said feedback step to adapt the acoustic models so that said speech recognition step produces the speech recognition result with higher precision than when said adaptation process step is not performed.
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8. A recording medium for recording a program which causes a computer to perform speech recognition processing, said program comprising:
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a speech recognition step of performing speech recognition on input speech to produce a speech recognition result using acoustic models; and
a natural-language processing step of performing natural language processing on said speech recognition result, said natural-language processing step including a feedback step of feeding back information obtained as a result of the natural language processing performed on the speech recognition result to said speech recognition step, said feedback information including adaptation zones, wherein said speech recognition step comprises an adaptation process step of processing the information fed back from said feedback step to adapt the acoustic models so that said speech recognition step produces the speech recognition result with higher precision than when said adaptation process step is not performed.
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Specification