ACOUSTIC NOISE REDUCING

A structure for attenuating noise in an acoustic port or an acoustic waveguide. A tube shaped acoustic passage has an acoustically resistive section near the inlet end or the outlet end. The tube shaped acoustic passage may have an elongated opening covered by acoustically resistive material. La pré...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	LAGE, ANTONIO M
Format:	Patent
Sprache:	eng ; 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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