H - Electricity – 03 – M
Patent
H - Electricity
03
M
H03M 7/30 (2006.01) G10L 19/02 (2006.01) G10L 5/06 (1990.01) G10L 7/08 (1990.01) G10L 9/00 (1990.01)
Patent
CA 2072721
In speech recognition and speech coding, the values of at least two features of an utterance are measured during a series of time intervals to produce a series of feature vector signals. A plurality of single-dimension prototype vector signals having only one parameter value are stored. At least two single-dimension prototype vector signals having parameter values representing first feature values, and at least two other single-dimension prototype vector signals have parameter values representing second feature values. A plurality of compound-dimension prototype vector signals have unique identification values and comprise one first-dimension and one second-dimension prototype vector signal. At least two compound-dimension prototype vector signals comprise the same first-dimension prototype vector signal. The feature values of each feature vector signal are compared to the parameter values of the compound-dimension prototype vector signals to obtain prototype match scores. The identification values of the compound-dimension prototype vector signals having the best prototype match scores for the feature vectors signals are output as a sequence of coded representations of an utterance to be recognized. A match score, comprising an estimate of the closeness of a match between a speech unit and the sequence of coded representations of the utterance, is generated for each of a plurality of speech units. At least one speech subunit, of one or more best candidate speech units having the best match scores, is displayed.
Bahl Lalit R.
Bellegarda Jerome R.
Epstein Edward Adam
Lucassen John M.
Nahamoo David
International Business Machines Corporation
Rosen Arnold
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