A SOUND GENERATING APPARATUS, A MOBILE ELECTRIC DEVICE AND A SYSTEM FOR GENERATING SOUND

A sound generating apparatus comprises a first cavity 110, a second cavity 120 and an electromechanical transducer 100 that emits sound waves into the first cavity and the second cavity. A third cavity 130 is connected to both the first and second cavities via a first passage 115 and a second passag...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	BURGHARDT, GUENTHER
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS PUBLIC ADDRESS SYSTEMS SOUND-PRODUCING DEVICES
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