Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1990-04-25
1992-07-07
Shaw, Dale M.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
G10L 506
Patent
active
051290014
ABSTRACT:
Modeling a word is done by concatenating a series of elemental models to form a word model. At least one elemental model in the series is a composite elemental model formed by combining the starting states of at least first and second primitive elemental models. Each primitive elemental model represents a speech component. The primitive elemental models are combined by a weighted combination of their parameters in proportion to the values of the weighting factors. To tailor the word model to closely represent variations in the pronunciation of the word, the word is uttered a plurality of times by a plurality of different speakers. Constructing word models from composite elemental models, and constructing composite elemental models from primitive elemental models enables word models to represent many variations in the pronunciation of a word. Providing a relatively small set of primitive elemental models for a relatively large vocabulary of words enables models to be trained to the voice of a new speaker by having the new speaker utter only a small subset of the words in the vocabulary.
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Nishimura et al., "Speaker Adaptation Method for HMM-Based Speech Recognition," IEEE Int'l Conf. on Acoustics, Speech, and Signal Processing, 11-14 Apr. 1988, pp. 207-210.
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Bahl Lalit R.
Bellegarda Jerome R.
De Souza Peter V.
Gopalakrishnan Ponani S.
Nahamoo David
International Business Machines - Corporation
Knepper David D.
Schechter Marc D.
Shaw Dale M.
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