ELECTROACOUSTIC TRANSDUCER DEVICE

PROBLEM TO BE SOLVED: To secure required sound pressure when an electroacoustic transducer is used as a speaker on securing sufficient sound quality even when the electroacoustic transducer is used by both the speaker and a receiver in an electroacoustic transducer device. SOLUTION: An internal spac...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	IDENO KATSUYA, URUSHIBATA KIYOSHI
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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