SOUND SOURCE CONSTITUTING APPARATUS

PROBLEM TO BE SOLVED: To constitute a sound source audible by limited specified persons. SOLUTION: The apparatus comprises a modulating means, a plurality of transducers T1, T2,... for transmitting sound waves, and curved surfaces S1, S2,... for reflecting the sound waves in specified directions. Th...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	YONEZAWA YOSHIMICHI
Format:	Patent
Sprache:	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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