| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent a lead wire of a voice coil from being disconnected, by preventing a diaphragm from being excessively displaced by excessive sound pressure. Ž<P>SOLUTION: A dynamic microphone includes: a diaphragm 11 onto which a voice coil 12 is mounted; a magnetism generation circuit 20 including a permanent magnet 21 providing a magnetic gap G to the voice coil 12; and a resonator 40 which includes a front acoustic terminal hole 41 and is disposed on a front face side of the diaphragm 11, wherein, on a surface side (on a surface opposite to the diaphragm-side surface) of the resonator 40, a valve element 50 is provided which is deformed by excessive sound pressure contained in sound pressure generated from a sound source to temporarily close the front acoustic terminal hole 41. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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