Title:
UNIDIRECTIONAL CAPACITOR MICROPHONE UNIT AND UNIDIRECTIONAL CAPACITOR MICROPHONE, AND MANUFACTURING METHOD FOR UNIDIRECTIONAL CAPACITOR MICROPHONE UNIT
Document Type and Number:
Japanese Patent JP2017060157
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a unidirectional capacitor microphone unit, a unidirectional capacitor microphone and a manufacturing method for a unidirectional capacitor microphone, in which directionality is not affected by an external environment.SOLUTION: The unidirectional capacitor microphone unit comprises: a diaphragm (20); a fixed pole (40) arranged opposing to the diaphragm to constitute a capacitor between the diaphragm and the pole; an insulation seat (50) arranged at a backside of the fixed pole to support the fixed pole; an air chamber (60) formed at the backside of the fixed pole; and a gap (G) formed between the fixed pole and the insulation seat. The fixed pole comprises a sound hole (40h) communicated with the air chamber. The insulation seat comprises a communication hole (50h) for communicating the gap with the outside, and the air chamber is communicated with the gap.SELECTED DRAWING: Figure 2
Inventors:
AKINO YUTAKA
Application Number:
JP2016167717A
Publication Date:
March 23, 2017
Filing Date:
August 30, 2016
Export Citation:
Assignee:
AUDIO TECHNICA KK
International Classes:
H04R19/04; H04R1/02; H04R31/00
Attorney, Agent or Firm:
Keiichi Nishimura