System for using silence in speech recognition
US6374219B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 1998 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Feb 20, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2015/085
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for recognizing speech based on an input data stream indicative of the speech provides possible words represented by the input data stream as a prefix tree including a plurality of phoneme branches connected at nodes. The plurality of phoneme branches is bracketed by at least one input silence branch corresponding to a silence phone on an input side of the prefix tree and at least one output silence branch corresponding to a silence phone on an output side of the prefix tree. The prefix tree is traversed to obtain a word that is likely represented by the input data stream. The silence phones provided in the prefix tree can vary based on context.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.