Microphone
US8879752B2 · kind B2 · utility
3Cited by
9References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2011 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Oct 3, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R19/016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A microphone capable of canceling vibration noise caused by mechanical vibration is provided with, in capsules, a pair of diaphragms and a pair of back plates opposite to the respective diaphragms. A printed circuit board is disposed at the middle of capsules. A pair of diaphragms is disposed close and opposite to the surfaces of the printed circuit board with the printed circuit board disposed therebetween. The difference in distance from a vibration source to the two diaphragms is made small. The microphone has a high canceling effect for canceling vibration noise caused by mechanical vibration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.