Patent ID: 7835533

Claim:
A method for manufacturing a condenser microphone using: a case forming member having a plurality of holes for forming air chambers individually; a circuit board forming member having a plurality of impedance conversion circuits corresponding to the individual air chambers; a spacer forming member for forming a plurality of spacers corresponding to the individual air chambers; a diaphragm sheet for forming a plurality of diaphragms corresponding to the individual spacers; and a diaphragm plate forming member for forming a plurality of diaphragm plates corresponding to the individual diaphragms, the method comprising: laminating the circuit board forming member, the case forming member, the spacer forming member, the diaphragm sheet and the diaphragm plate forming member; arranging, for each of the air chambers formed by the lamination, the back plate and the contact spring for elastically biasing the back plate to hold the back plate in abutment against the spacer forming member and for conducting the back plate with the impedance conversion circuits; jointing the individual laminated members integrally to form a laminate composed of a plurality of condenser microphone constituting bodies; and cutting the laminate to separate the individual condenser microphone constituting bodies.