| abstract |
Provided are: a soundproofing structure which achieves high soundproofing performance across a wide frequency band, is compact, ensures ventilation properties, and transmits light; and a cylindrical structure, a window member, and a partition member which have this soundproofing structure. Thus, a soundproofing structure having a sound-proofing cell equipped with a frame which has a frame hole section passing therethrough, and a membrane secured to the frame so as to cover the frame hole section, wherein the membrane has a plurality of through-holes which pass therethrough in the thickness direction, the average diameter of the opening in the through-holes is 0.1-250μm, inclusive, and the normal direction to the plane of the membrane is angled relative to the direction of the sound source to be soundproofed against. |