Identifying spoken commands by templates of ordered voiced and unvoiced sound intervals
US8924209B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2012 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Jul 31, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/93
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method is disclosed for identifying a spoken command by detecting intervals of voiced and unvoiced sound, and then comparing the order of voiced and unvoiced sounds to a set of templates. Each template represents one of the predetermined acceptable commands of the application, and is associated with a predetermined action. When the order of voiced and unvoiced intervals in the spoken command matches the order in one of the templates, the associated action is thus selected. Silent intervals in the command may also be included for enhanced recognition. Efficient protocols are disclosed for discriminating voiced and unvoiced sounds, and for detecting the beginning and ending of each sound interval in the command, and for comparing the command sequence to the templates. In a sparse-command application, this method provides fast and robust recognition, and can be implemented with low-cost hardware and extremely minimal software.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.