| 摘要 |
PROBLEM TO BE SOLVED: To enable adjusting each output level of a positive phase and a reverse phase with two capacitor microphone units combined, in a capacitor microphone having the two capacitor microphone units for a positive-phase output and a reverse-phase output that are formed by disposing each diaphragm in the same plane.SOLUTION: A capacitor microphone includes: a microphone unit 10 for positive-phase output having a fixed pole 13 connected to a gate of an FET 15; and a microphone unit 20 for reverse-phase output having a diaphragm 21 connected to a gate of an FET 25. A variable resistor 30 is connected between output terminals 15a and 25a of the microphone units 10 and 20, and a diaphragm 11 of the microphone unit 10 for positive-phase output and a fixed pole 23 of the microphone unit 20 for reverse-phase output are connected to a slider 30a of the variable resistor 30. |
