A chronological review of production and applications of electret condenser microphone for consumer use

Author

Yasuno, Yoshinobu ; Riko, Yasuhiro

Author_Institution

Matsushita Commun. Ind. Co. Ltd., Yokohama, Japan

fYear

1994

fDate

7-9 Sep 1994

Firstpage

943

Lastpage

948

Abstract

Mass production of electret condenser microphones (ECM) built into compact cassette tape recorders for consumer use started in 1970. The key issues were the FEP electret foil and the integrated circuit including FET and resistor. The production grew according to progress of applications which was widened to stereo equipments and to communication equipments. Materials and fabricating technologies have coped with the demands due to increasing quantity and diversifying requirements. The microphones have changed to smaller size and directional characteristics. The present dominant requirement is for higher temperature specifications for automated assembly systems

Keywords

consumer electronics; electrets; microphones; product development; FEP electret foil; applications; automated assembly systems; camcorder; cellular radio; communication equipments; compact cassette tape recorders; consumer use; directional characteristics; electret condenser microphone; higher temperature specifications; integrated circuit; mass production; stereo equipments; telephone; Assembly systems; Communication equipment; Electrets; Electrochemical machining; FET integrated circuits; Integrated circuit technology; Mass production; Microphones; Resistors; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1994. (ISE 8), 8th International Symposium on

Conference_Location

Paris

Print_ISBN

0-7803-1940-0

Type

conf

DOI

10.1109/ISE.1994.515252

Filename

515252