Adaptive multi-pass speech recognition system

Details Adaptive multi-pass speech recognition system Adaptive multi-pass speech recognition system

2008-07-15

2008-07-15

Opsasnick, Michael N. (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S246000

Reexamination Certificate

active

07401017

ABSTRACT:
Method and apparatus for multi-pass speech recognition. An input device receives spoken input. A processor performs a first pass speech recognition technique on the spoken input and forms first pass results. The first pass results include a number of alternative speech expressions, each having an assigned score related to the certainty that the corresponding expression correctly matches the spoken input. The processor selectively performs a second pass speech recognition technique on the spoken input according to the first pass results. Preferably, the second pass attempts to correctly match the spoken input to only those expressions which were identified during the first pass. Otherwise, if one of the expressions identified by the first pass is assigned a score higher than a predetermined threshold (e.g., 95%), the second pass is not performed. Because the second pass is performed only when necessary, the invention recognizes speech with a faster average speed for a given accuracy in comparison to prior systems. Alternately, the first pass results identify a characteristic of the spoken input. The characteristic can be the gender of the speaker or a type of telephone the speaker is calling from. In which case, the second pass speech recognition technique is selected from a plurality of speech recognition techniques according to the characteristic identified by the first pass. Because the selected second pass technique is specific to the characteristic of the spoken input, the second pass technique can perform speech recognition faster for a given accuracy than a technique which is not specific.

REFERENCES:
patent: 4481593 (1984-11-01), Bahler
patent: 4489434 (1984-12-01), Moshier
patent: 4590604 (1986-05-01), Feilchenfeld
patent: 4866778 (1989-09-01), Baker
patent: 4903305 (1990-02-01), Gillick et al.
patent: 5127055 (1992-06-01), Larkey
patent: 5208897 (1993-05-01), Hutchins
patent: 5239586 (1993-08-01), Marui
patent: 5293452 (1994-03-01), Picone et al.
patent: 5418717 (1995-05-01), Su et al.
patent: 5488652 (1996-01-01), Bielby et al.
patent: 5515475 (1996-05-01), Gupta et al.
patent: 5526463 (1996-06-01), Gillick et al.
patent: 5528731 (1996-06-01), Sachs et al.
patent: 5568540 (1996-10-01), Greco et al.
patent: 5590242 (1996-12-01), Juang et al.
patent: 5617486 (1997-04-01), Chow et al.
patent: 5640490 (1997-06-01), Hanson et al.
patent: 5651054 (1997-07-01), Dunn et al.
patent: 5717743 (1998-02-01), McMahan et al.
patent: 5742905 (1998-04-01), Pepe et al.
patent: 5778338 (1998-07-01), Jacobs et al.
patent: 5794192 (1998-08-01), Zhao
patent: 5799065 (1998-08-01), Junqua et al.
patent: 5822405 (1998-10-01), Astarabadi
patent: 5822730 (1998-10-01), Roth et al.
patent: 5842161 (1998-11-01), Cohrs et al.
patent: 5848130 (1998-12-01), Rochkind
patent: 5854999 (1998-12-01), Hirayama
patent: 5873062 (1999-02-01), Hansen et al.
patent: 5937384 (1999-08-01), Huang et al.
patent: 5937557 (1999-08-01), Bowker et al.
patent: 5946653 (1999-08-01), Campbell et al.
patent: 5953701 (1999-09-01), Neti et al.
patent: 5960384 (1999-09-01), Brash
patent: 6018708 (2000-01-01), Dahan et al.
patent: 6044346 (2000-03-01), Ali et al.
patent: 6044347 (2000-03-01), Abella et al.
patent: 6058363 (2000-05-01), Ramalingam
patent: 6070140 (2000-05-01), Tran
patent: 6098040 (2000-08-01), Petroni et al.
patent: 6151571 (2000-11-01), Pertrushin
patent: 6185535 (2001-02-01), Hedin et al.
patent: 6272455 (2001-08-01), Hoshen et al.
patent: 6275801 (2001-08-01), Novak et al.
patent: 6275806 (2001-08-01), Pertrushin
patent: 6327343 (2001-12-01), Epstein et al.
patent: 6334103 (2001-12-01), Surace et al.
patent: 6363348 (2002-03-01), Besling et al.
patent: 6574597 (2003-06-01), Mohri et al.
patent: 6732072 (2004-05-01), Pearce et al.
patent: 10079785 (1998-03-01), None

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