Voice controlled system and method
US7523038B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jul 24, 2003 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | Aug 23, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2015/088
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A voice controlled system includes a microphone for receiving voice commands and for converting each voice command to an electrical output; a filter system connected to receive the electrical outputs of the microphone and to produce for each voice command a first output corresponding to the high-frequency component of the voice command, and a second output corresponding to the low-frequency component of the voice command; and a processor for processing the first and second outputs of the filter system, and for outputting, for each voice command, a first electrical signal when the low-frequency component precedes the high-frequency component in the respective voice command, and a second electrical signal when the high-frequency component precedes the low-frequency component in the respective voice command. The voice command is determined to be a “Yes” command when the low-frequency component precedes the high-frequency component; a “Stop” command when the high-frequency precedes the low-frequency component and a “No” command when the high-frequency component is below a predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.