| 摘要 |
PROBLEM TO BE SOLVED: To obtain a handset microphone capable of preventing the mixture of noise due to a switch operation and also preventing a malfunction.SOLUTION: A handset microphone includes: a microphone unit; a first switch connected to the output end of the microphone unit in parallel; and a second switch for opening/closing the output end. Concerning the handset microphone, contact points are opened/closed by the influence of a magnetic field in the first switch and the second switch. When the influence of the magnetic field is being received, the contact point is closed so as to short-circuit the output end in the first switch. When the influence of the magnetic field is being received, the contact point is opened so as to disconnect the output end in the second switch. |
