Micromechanical microphone
US6075867A · kind A · utility
63Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1998 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | Mar 19, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R19/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A Micromechanical Microphone is formed with a housing and a transducer therein. The housing has a sound inlet on one side of the transducer and a pressure compensation hole on the opposite side. A sealing diaphragm is placed on each side of the transducer to seal it against humidity, dust and dirt. The transducer may be a capacitive transducer with an external bias or an electret based transducer. The microphone is useful in small devices such as hearing aides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.