Transducer for sensing body sounds
US6661897B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Dec 23, 2002 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Dec 23, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/46
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An acoustic-to-electrical transducer for sensing body sounds is provided. The transducer comprises a diaphragm that can be placed in direct contact with a body, whereby the diaphragm motion directly affects an electromagnetic sensing signal, which is then converted to an electrical signal representation of the diaphragm motion. Such sensing means allows the diaphragm to move freely without mechanical coupling to a secondary transducer, while providing a direct and efficient acoustic to electrical conversion means. The transducer further provides a means for using static diaphragm pressure to control gain and frequency characteristics of the electrical signal. The sensor, circuitry, manufacturing methods and improvements are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.