Constraint-based speech recognition system and method
US7124085B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2001 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Oct 30, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A constraint-based speech recognition system for use with a form-filling application employed over a telephone system is disclosed. The system comprises an input signal, wherein the input signal includes both speech input and non-speech input of a type generated by a user via a manually operated device. The system further comprises a constraint module operable to access an information database containing information suitable for use with speech recognition, and to generate candidate information based on the non-speech input and the information database, wherein the candidate information corresponds to a portion of the information. The system further comprises a speech recognition module operable to recognize speech based on the speech input and the candidate information. In an exemplary embodiment, the manually operated device is a touch-tone telephone keypad, and the information database is a lexicon encoded according to classes defined by the keys of the keypad.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.