Patent ID: 8059842

Claim:
A capacitor microphone comprising: a plate having a fixed electrode; a diaphragm including a center portion and at least one near-end portion that is formed at an outer periphery of the diaphragm, wherein the center portion has a vibrating electrode, wherein the vibrating electrode is positioned relative to the fixed electrode, wherein the center portion is increased in rigidity in comparison with the near-end portion, and wherein the center portion and the near-end portion are made from the same material; and a spacer that is fixed to the plate and the near-end portion of the diaphragm to form an air gap between the plate and the diaphragm; and a plurality of extension arms that project outwardly from the outer periphery of the diaphragm and that are arranged with equal spacing therebetween in a circumferential direction of the diaphragm, wherein a tip end of one extension arm is connected with an external connection terminal.