Speech activity detection using acoustic and facial characteristics in an automatic speech recognition system
US7219062B2 · kind B2 · utility
21Cited by
15References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2002 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | Apr 18, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L17/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An automatic speech recognizer only responsive to acoustic speech utterances is activated only in response to acoustic energy having a spectrum associated with the speech utterances and at least one facial characteristic associated with the speech utterances. In one embodiment, a speaker must be looking directly into a video camera and the voices and facial characteristics of plural speakers must be matched to enable activation of the automatic speech recognizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.