Method and apparatus for performing real-time endpoint detection in automatic speech recognition
US6782363B2 · kind B2 · utility
64Cited by
2References
28Claims
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Key dates
| Filing date | May 4, 2001 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Mar 13, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for performing real-time endpoint detection for use in automatic speech recognition. A filter is applied to the input speech signal and the filter output is then evaluated with use of a state transition diagram (i.e., a finite state machine). The filter is advantageously designed in light of several criteria in order to increase the accuracy and robustness of detection. The state transition diagram advantageously has three states. The endpoints which are detected may then be advantageously applied to the problem of energy normalization of the speech portion of the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.