Vehicle-mounted external sound amplification device based on Internet of Things

The utility model relates to the vehicle-mounted field, in particular to a vehicle-mounted external sound amplifying device based on the internet of things, which comprises a loudspeaker, grooves and a dustproof pad, the inner wall of the loudspeaker is provided with a plurality of grooves, the inne...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	YIN ZEHUA, XIE DONG, WANG GANG, PENG GANG, TANG YING, HE ZHIHUAN, YANG WENZHI
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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