| 摘要 |
A cellular material barrier system for reducing sound transmission. The cellular material system includes a planar cellular metamaterial arrangement which includes at least one unit cell, the unit cell includes a sound normalizing arrangement, and a planar metamaterial arrangement coupled to the sound normalizing arrangement on a first side, the planar metamaterial arrangement includes a plate, and a frame affixed to the plate, the sound normalizing arrangement configured to normalize incident sound received at non-normal angle to thereby convey sound at normal angles to the planar metamaterial arrangement, the unit cell further comprising a back layer that is coupled to the sound normalizing arrangement on a second side, opposite the first side, the back layer is made from a porous material, including at least one of a fibrous layer, polymeric foams, ceramic foams, and metallic foams. |
| 主权项 |
1. A cellular material barrier system for reducing sound transmission comprising:
a planar cellular metamaterial arrangement, including at least one unit cell, the unit cell including
a sound normalizing arrangement; anda planar metamaterial arrangement coupled to the sound normalizing arrangement on a first side, the planar metamaterial arrangement including
a plate, anda frame affixed to the plate, the sound normalizing arrangement configured to normalize incident sound received at non-normal angles to thereby convey sound at normal angles to the planar metamaterial arrangement. |
