Electret condenser microphone
US7136500B2 · kind B2 · utility
13Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 5, 2003 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Dec 6, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R19/016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electret condenser microphone includes a housing, a diaphragm disposed within the housing, first and second sound inlet ports and an acoustic resistive material disposed within the housing and in the acoustic path between the second inlet port and the diaphragm. The acoustic resistive may further electrically couple a backplate coupled to the diaphragm to an amplifier disposed within the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.