| 摘要 |
Provided is a laminated soundproofing structure formed by laminating single layer soundproofing structures which include at least one soundproofing cell which is disposed on a 2D plane and which comprises a frame, a film, and an opening having a hole. The single layer soundproofing structure has a shielding peak frequency, which is determined according to the opening of the soundproofing cell and which also maximizes the transmission loss, on the a side having a lower frequency than the first natural oscillation frequency of the film of the soundproofing cell. The soundproofing cells of the single layer soundproofing structures are mutually laminated so that there is a distance therebetween. At least some of the soundproofing cells that are laminated have the same frame, film, and opening conditions. Due to this configuration, provided is a soundproofing structure for which: the structure is light and thin; there is no dependence on the position or shape of the holes; the robustness as a sound blocking material is high; there is stability; there is air permeability and no build-up of heat; and manufacturing suitability is excellent. |
