SOUND SOURCE CONSTITUTING APPARATUS

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

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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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Beschreibung
Zusammenfassung: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. The curved surfaces S1, S2,... are partially curved surfaces forming part of ellipsoids of revolution Er1, Er2,... having a first common focus F1o. The transducers T1, T2,... are disposed at second foci F21, F22,... of the ellipsoids Er1, Er2,...