| 摘要 |
PROBLEM TO BE SOLVED: To provide a condenser microphone with high sensitivity. SOLUTION: The condenser microphone includes: a plate with a fixed electrode and a throughhole; a support part formed at the outside of the plate and supporting the plate; a center part with a moving electrode; a middle part formed at the outside of the center part and having rigidity higher than that of the center part; a near end part extended from the middle part up to the support part and whose rigidity is lower than that of the center part and the middle part; and a diaphragm stretched over the support part while forming an air gap with the plate and vibrated by a sound wave. COPYRIGHT: (C)2007,JPO&INPIT
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