| 摘要 |
PURPOSE: A back the sound proofing wall which uses the sound proofing wall sound-absorbing panel and that sound-absorbing panel is provided to make agreeable surrounding environment by removing noise by changing the shape of an sound absorbing panel. CONSTITUTION: A back the sound proofing wall comprise a frame(110), a support piece(120), and a sound absorption cell. The frame forms the boundary surface. The support piece comprises the fixed hole(121) which is formed in both sides. The sound absorption cell comprises a recess portion and a protrusion. The sound absorption cell comprises the sound absorption groove and sound absorption protrusion. The sound absorption groove and sound absorption protrusion are formed in the surface of the sound absorption cell.
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