Patent ID: 6985597

Claim:
A variable directional capacitor microphone including a first and a second capacitor elements, in the first capacitor element a first vibrating plate supporting member, a first spacer ring, a first fixed electrode having through holes and a first pedestal having a through hole in the center of the pedestal integratedly assembled in this order in a first case formed in a ring-shape, a first vibrating plate strained and fixed on the first vibrating plate supporting member, in the second capacitor element a second vibrating plate supporting member, a second spacer ring, a second fixed electrode having through holes and a second pedestal having a through hole in the center of the pedestal integratedly assembled in this order in a second case formed in a ring-shape, a second vibrating plate strained and fixed on the second vibrating plate supporting member, the first and the second capacitor elements combined through a connecting ring having female screw threads with the first and the second pedestals faced back-to-back, the variable directional capacitor microphone comprising: an elastic acoustic resisting member disposed between the first and the second pedestals; and the acoustic resisting member disposed in the position corresponding to the through hole bored in the center of each of the pedestals; wherein an acoustic resistance of the elastic acoustic resisting member is capable of being adjusted in the state that each of the capacitor elements has combined and is capable of being varied depending on the degree of fastening each of the pedestals to the connecting ring.