| 摘要 |
A soundproof member is provided to have more effective sound absorbing structure by utilizing the principle of resonance sound absorption actively. A soundproof member comprises a main body(100) having a hollow, and many through holes(200) formed on the side facing a noise source of the main body to penetrate with the hollow, wherein many through holes are formed in the different sizes throughout, wherein the big sized through hole is arranged on one side and the gradually smaller sized through holes are arranged toward the other side, and the big sized through hole is arranged in the center and the gradually smaller sized through holes are arranged toward the edge.
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