Communications facilities with device of making an uproar falls

The utility model discloses a communications facilities with device of making an uproar falls, including communications facilities and NOISE -CANCELLING HEADPHONES, first recess has been seted up at communications facilities's front surface top, and the inside second recess of having seted up i...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	WU XIONGLI
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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