Muffling panel

G - Physics – 10 – K

Patent

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Details

G10K 11/16 (2006.01) E01F 8/00 (2006.01) E04B 1/86 (2006.01) E04B 5/43 (2006.01) G10K 11/175 (2006.01) G10K 11/178 (2006.01) E04B 1/74 (2006.01) E04B 1/84 (2006.01)

Patent

CA 2268267

This invention provides a muffling panel of a new-type lightweight construction having a function of effectively excluding sounds in low and medium sound ranges and high muffling and sound-absorbing properties in a relatively low frequency band area, and comprising at least two parallel diaphragms, a frame body for fixing of the diaphragms and a vibration transmitting mechanism which links to the diaphragms and can mechanically transmit reverse phase vibration, wherein the vibration transmitting mechanism converts vibration of one of the diaphragms which vibrates when receiving a sound into reverse phase vibration thereof to transmit it to the other of the diaphragms, thus causing the other of the diaphragms to displace inward or outward and vibrate simultaneously with one of the diaphragms according to vibration energy of the above original sound.

Paroi d'insonorisation réalisée selon une construction légère d'un nouveau type, qui isole efficacement des sons situés dans la plage des sons faibles et moyens et qui possède des caractéristiques élevées d'insonorisation dans une plage de bandes de fréquences relativement faibles. Ladite paroi comporte au moins deux diaphragmes se faisant face, un châssis destiné à fixer les diaphragmes et un mécanisme d'émission de vibrations de type mécanique et de phase opposée qui sert à connecter les diaphragmes. Le mécanisme d'émission de vibrations convertit de manière mécanique la vibration de l'un des diaphragmes qui reçoit des sons le faisant vibrer en vibrations de phase opposée qui sont transmises à l'autre diaphragme, de telle sorte que l'énergie vibratoire du son initial provoque le déplacement de l'autre diaphragme vers l'intérieur ou vers l'extérieur et sa vibration simultanée avec le premier diaphragme.

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