Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Patent
1992-04-24
1993-08-03
Fleming, Michael R.
Electrical audio signal processing systems and devices
Hearing aids, electrical
Specified casing or housing
381 43, 381 41, G10L 9100
Patent
active
052336816
ABSTRACT:
A speech recognition apparatus and method estimates the next word context for each current candidate word in a speech hypothesis. An initial model of each speech hypothesis comprises a model of a partial hypothesis of zero or more words followed by a model of a candidate word. An initial hypothesis score for each speech hypothesis comprises an estimate of the closeness of a match between the initial model of the speech hypothesis and a sequence of coded representations of the utterance. The speech hypotheses having the best initial hypothesis scores form an initial subset. For each speech hypothesis in the initial subset, the word which is most likely to follow the speech hypothesis is estimated. A revised model of each speech hypothesis in the initial subset comprises a model of the partial hypothesis followed by a revised model of the candidate word. The revised candidate word model is dependent at least on the word which is estimated to be most likely to follow the speech hypothesis. A revised hypothesis score for each speech hypothesis in the initial subset comprises an estimate of the closeness of a match between the revised model of the speech hypothesis and the sequence of coded representations of the utterance. The speech hypotheses from the initial subset which have the best revised match scores are stored as a reduced subset. At least one word of one or more of the speech hypotheses in the reduced subset is output as a speech recognition result.
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Bahl Lalit R.
De Souza Peter V.
Gopalakrishnan Ponani S.
Picheny Michael A.
Fleming Michael R.
Hafie Tariq R.
International Business Machines - Corporation
Schechter Marc D.
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