Sound absorbing panel

Details Sound absorbing panel Sound absorbing panel

E - Fixed Constructions

04

B

181/14

E04B 1/84 (2006.01) G10K 11/172 (2006.01) B29C 49/00 (2006.01) B29C 51/00 (2006.01) B60R 13/08 (2006.01)

Patent

CA 2040076

A sound absorbing panel includes Helmholtz-resonators of different resonance frequencies on a surface which is adapted to face a sound source. All Helmholtz-resonators located within the sphere of activity of a Helmholtz-resonator of a relatively lower resonance frequency have resonance frequencies which are mutually different and different from that of the lower frequency resonator. The Helmholtz-resonators cover the whole area of the panel. The walls of the resonators as well as the whole of the surface which supports the resonators is constructed as an absorber sheet. The openings of the resonators are kept uncovered. The resonators and the absorber sheet are made of the same material. The sound absorbing panel may be easily manufactured, provides an improved sound absorption and has small overall dimensions.

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