Title :
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
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;
Conference_Titel :
Electrets, 1994. (ISE 8), 8th International Symposium on
Conference_Location :
Paris
Print_ISBN :
0-7803-1940-0
DOI :
10.1109/ISE.1994.515252
