Data processing: speech signal processing – linguistics – language – Speech signal processing – Recognition
Reexamination Certificate
2008-01-29
2008-01-29
Opsasnick, Michael N. (Department: 2626)
Data processing: speech signal processing, linguistics, language
Speech signal processing
Recognition
C704S256000
Reexamination Certificate
active
10898382
ABSTRACT:
A method and apparatus for discriminative estimation of parameters in a maximum a posteriori (MAP) speaker adaptation condition, and a voice recognition apparatus having the apparatus and a voice recognition method using the method are provided. The method for discriminative estimation of parameters in a maximum a posteriori (MAP) speaker adaptation condition, in which at least speaker-independent model parameters and prior density parameters, which are standards in recognizing a speaker's voice, are obtained as the result of model training after fetching training sets on a plurality of speakers from a training database, has the steps of (a) classifying adaptation data among training sets for respective speakers; (b) obtaining model parameters adapted from adaptation data on each speaker by using the initial values of the parameters; (c) searching a plurality of candidate hypotheses on each uttered sentence of training sets by using the adapted model parameters, and calculating gradients of speaker-independent model parameters by measuring the degree of errors on each training sentence; and (d) when training sets of all speakers are adapted, updating parameters, which were set at the initial stage, based on the calculated gradients.
REFERENCES:
patent: 5046099 (1991-09-01), Nishimura
patent: 5606644 (1997-02-01), Chou et al.
patent: 5664059 (1997-09-01), Zhao
patent: 5675506 (1997-10-01), Savic
patent: 5737485 (1998-04-01), Flanagan et al.
patent: 5737487 (1998-04-01), Bellegarda et al.
patent: 5737489 (1998-04-01), Chou et al.
patent: 5787394 (1998-07-01), Bahl et al.
patent: 5793891 (1998-08-01), Takahashi et al.
patent: 5806029 (1998-09-01), Buhrke et al.
patent: 5864810 (1999-01-01), Digalakis et al.
patent: 6073096 (2000-06-01), Gao et al.
patent: 6151574 (2000-11-01), Lee et al.
patent: 6151575 (2000-11-01), Newman et al.
patent: 6263309 (2001-07-01), Nguyen et al.
patent: 6272462 (2001-08-01), Nguyen et al.
patent: 6327565 (2001-12-01), Kuhn et al.
patent: 6343267 (2002-01-01), Kuhn et al.
patent: 6389393 (2002-05-01), Gong
patent: 6401063 (2002-06-01), Hebert et al.
patent: 6421641 (2002-07-01), Huang et al.
patent: 6460017 (2002-10-01), Bub et al.
patent: 6499012 (2002-12-01), Peters et al.
Choi In-jeong
Kim Sang-ryong
Buchanan & Ingersoll & Rooney PC
Opsasnick Michael N.
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