| 摘要 |
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 17 is disposed at the middle of capsules 18 and 19. A pair of diaphragms 11 and 12 is disposed close and opposite to the surfaces of the printed circuit board 17 with the printed circuit board 17 disposed therebetween. The difference in distance from a vibration source to the two diaphragms 11 and 12 is made small. The microphone has a high canceling effect for canceling vibration noise caused by mechanical vibration. |
