MICROPHONE UNIT

Disclosed is a microphone unit comprising a film substance (1), electrically conductive layers (15, 16) which are formed on both substrate surfaces of the film substrate (11), and an electrical acoustic transducer unit (12) which is provided on the film substrate (11) and comprises a diaphragm capab...

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Bibliographische Detailangaben
Hauptverfasser:	HORIBE RYUSUKE, TANAKA FUMINORI, ISHIDA TOMIO, INODA TAKESHI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
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Beschreibung
Zusammenfassung:	Disclosed is a microphone unit comprising a film substance (1), electrically conductive layers (15, 16) which are formed on both substrate surfaces of the film substrate (11), and an electrical acoustic transducer unit (12) which is provided on the film substrate (11) and comprises a diaphragm capable of converting a sound pressure to an electrical signal. In the microphone unit, the linear expansion coefficient of the film substrate (11) including the electrically conductive layers (15, 16) falls within the range of 0.8 to 2.5 times inclusive the linear expansion coefficient of the diaphragm.