Enhanced accuracy for speech recognition grammars

Patent metadata

Field	Value
Publication number	US-9412364-B2
Application number	US-201414268061-A
Country	US
Kind code	B2
Filing date	May 2, 2014
Priority date	Sep 7, 2006
Publication date	Aug 9, 2016
Grant date	Aug 9, 2016

Abstract

Disclosed herein are methods and systems for recognizing speech. A method embodiment comprises comparing received speech with a precompiled grammar based on a database and if the received speech matches data in the precompiled grammar then returning a result based on the matched data. If the received speech does not match data in the precompiled grammar, then dynamically compiling a new grammar based only on new data added to the database after the compiling of the precompiled grammar. The database may comprise a directory of names.

First claim

We claim:

1. A method comprising:
comparing, via a processor, speech to a first grammar, to yield a comparison; and
in response to the comparison, compiling a second grammar using data added to a database after compilation of the first grammar; and
using the second grammar to process additional speech.

2. The method of claim 1 , wherein the second grammar is stored separately from the first grammar.

3. The method of claim 1 , wherein the data is obtained from one of a table, a list, and an update database.

4. The method of claim 1 , wherein the database comprises a directory of names.

5. The method of claim 1 , further comprising compiling a third grammar when the additional speech does not match information in the second grammar.

6. The method of claim 5 , wherein the third grammar comprises updated data from the database.

7. The method of claim 1 , wherein the speech comprises an acoustic representation of a spoken name.

8. A system comprising:
a processor; and
a computer-readable storage medium having instructions stored which, when executed by the processor, cause the processor to perform operations comprising:
comparing speech to a first grammar, to yield a comparison; and
in response to the comparison, compiling a second grammar using data added to a database after compilation of the first grammar; and
using the second grammar to process additional speech.

9. The system of claim 8 , wherein the second grammar is stored separately from the first grammar.

10. The system of claim 8 , wherein the data is obtained from one of a table, a list, and an update database.

11. The system of claim 8 , wherein the database comprises a directory of names.

12. The system of claim 8 , the computer-readable storage medium having additional instructions stored which, when executed by the processor, cause the processor to perform operations comprising compiling a third grammar when the additional speech does not match information in the second grammar.

13. The system of claim 12 , wherein the third grammar comprises updated data from the database.

14. The system of claim 8 , wherein the speech comprises an acoustic representation of a spoken name.

15. A computer-readable storage device having instructions stored which, when executed by a computing device, cause the computing device to perform operations comprising:
comparing speech to a first grammar, to yield a comparison; and
in response to the comparison, compiling a second grammar using data added to a database after compilation of the first grammar; and
using the second grammar to process additional speech.

16. The computer-readable storage device of claim 15 , wherein the second grammar is stored separately from the first grammar.

17. The computer-readable storage device of claim 15 , wherein the data is obtained from one of a table, a list, and an update database.

18. The computer-readable storage device of claim 15 , wherein the database comprises a directory of names.

19. The computer-readable storage device of claim 15 , having additional instructions stored which, when executed by the computing device, cause the computing device to perform operations comprising compiling a third grammar when the additional speech does not match information in the second grammar.

20. The computer-readable storage device of claim 19 , wherein the third grammar comprises updated data from the database.

Assignees

• At & T Ip Ii Lp

Inventors

• Blanchard Harry
• Lewis Steven H
• Shankarnarayan Sivaprasad
• Zhang Lan

Classifications

• G10L15/063

  Training · CPC title

• G10L15/19 Primary

  Grammatical context, e.g. disambiguation of the recognition hypotheses based on word sequence rules · CPC title

• G10L15/183

  using context dependencies, e.g. language models · CPC title