Acoustic device

Details Acoustic device Acoustic device

E - Fixed Constructions

04

B

181/15

E04B 1/74 (2006.01) G10K 11/172 (2006.01)

Patent

CA 1198375

ABSTRACT A sound-damping acoustic device comprises a sheet- material member (14) which can be set, by sound, into oscillatory motion transversely to its geometrical extension, and which forms at least a part of the de- fining walls of a chamber (16). The member (14) is sub- stantially free-swinging, and the chamber (16) is at least substantially acoustically closed. The device also comprises means for damping displacement of the member transversely to said geometrical extension in proportion to changes in the rate of displacement.

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