SOUND ABSORBER

PROBLEM TO BE SOLVED: To provide a sound absorber with a fine sound absorbing effect in a low-frequency region, in which selection of materials is highly flexible. SOLUTION: In the sound absorber 1 including a frame 2 in which a through-hole 2a is formed, and a film vibration type sound absorbing ma...

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Bibliographische Detailangaben
Hauptverfasser:	AKASAKA SHUICHI, MASUBUCHI NAGANORI
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR BUILDING CEILINGS FIXED CONSTRUCTIONS FLOORS GENERAL BUILDING CONSTRUCTIONS INSULATION OR OTHER PROTECTION OF BUILDINGS METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS ROOFS SOUND-PRODUCING DEVICES WALLS, e.g. PARTITIONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a sound absorber with a fine sound absorbing effect in a low-frequency region, in which selection of materials is highly flexible. SOLUTION: In the sound absorber 1 including a frame 2 in which a through-hole 2a is formed, and a film vibration type sound absorbing material 3 which covers either of apertures of both ends of the through-hole 2a, the film vibration type absorbing material 3 includes a film body 31 and a weight member 32 provided in a gravity center section of the film body 31. COPYRIGHT: (C)2010,JPO&INPIT