Noise-proof structure of air conduction earphone for audiometry

An anti-noise structure of an air conduction earphone for audiometry comprises an earphone shell, a loudspeaker, a sound insulation filling layer, an inner sound insulation pad and an outer sound insulation cover, the loudspeaker is arranged on the earphone shell, a loudspeaker hole faces outwards,...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	XIE QINGHUA, LIU YINGWEI, FU SHI, XIE MEIYANG, GUO XINAN, ZHU RIXIONG, HUANG WEIHUA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
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