Detecting voiced and unvoiced speech using both acoustic and nonacoustic sensors
US7246058B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 2002 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Apr 17, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2025/783
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods are provided for detecting voiced and unvoiced speech in acoustic signals having varying levels of background noise. The systems receive acoustic signals at two microphones, and generate difference parameters between the acoustic signals received at each of the two microphones. The difference parameters are representative of the relative difference in signal gain between portions of the received acoustic signals. The systems identify information of the acoustic signals as unvoiced speech when the difference parameters exceed a first threshold, and identify information of the acoustic signals as voiced speech when the difference parameters exceed a second threshold. Further, embodiments of the systems include non-acoustic sensors that receive physiological information to aid in identifying voiced speech.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.