DISPOSITIF DE SORTIE AUDIO

A sound output apparatus is provided, which includes an outer case having an upper portion with an opening formed upward, and a lower portion with sound holes formed therethrough, a first sound output unit provided at an upper side within the outer case and capable of outputting sounds of a first fr...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	PARK, SEUNGJONG, YOO, HYUNSUN, SEO, SANGWOO
Format:	Patent
Sprache:	fre
Schlagworte:	DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS
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