Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Patent
1998-05-22
1999-11-30
Hudspeth, David R.
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
704232, 704233, G10L 700
Patent
active
059959240
ABSTRACT:
A computer-based method and apparatus for classifying statement types using intonation analysis. The method and apparatus identify a user's potential query when the user responds to information during dialog with an automated dialog system. Pitch information is extracted, via a cepstrum, from the speech signal. In one embodiment, the pitch intonation is processed to form a smoothed pitch or intonation contour. Then the smoothed pitch contour is processed by a set of shape detectors and this output, together with statistical information, is sent to a rule-based algorithm which attempts to classify the statement type. In another embodiment, the smoothed pitch contour is processed by a pattern recognition system such as a neural network trained with a back-propagation learning algorithm.
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Hudspeth David R.
Lerner Martin
MediaOne Group Inc.
U.S. West Inc.
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