| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound collection apparatus for a microphone to obtain an ideal frequency response property even when a frequency is extremely high or low. SOLUTION: A sound collection apparatus for a microphone comprises a housing unit, a diaphragm in which a coil is stretched on its surface and which is mounted in the housing unit and two magnetic units which are disposed within the housing unit so as to face both sides of the diaphragm, respectively, and constitute magnetic circuits, respectively. When the diaphragm vibrates, a current is generated in the coil by the two magnetic circuits constituted by the two magnetic units. COPYRIGHT: (C)2009,JPO&INPIT
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