Sound absorbing material - sound absorbing material

Japanese: 吸音材料 - きゅうおんざいりょう
Sound absorbing material - sound absorbing material
A material that absorbs sound well. Its performance is expressed as the sound absorption coefficient (the energy reflected from the energy incident on the material minus the energy that is incident on the material divided by the incident energy, i.e., 1 minus the reflectivity). Sound-absorbing panels such as tex, board, and metal plates (often with many holes), cloth, felt, glass fiber, rock wool, and other porous materials, as well as combinations of both, are used. An essential material for the acoustic design of halls, theaters, and conference rooms.
→ Related topics Soundproofing structure

Source : Heibonsha Encyclopedia About MyPedia Information

Japanese:
音をよく吸収する材料。性能は吸音率(物質に入射したエネルギーから反射したエネルギーを引き,入射エネルギーで割ったもの,つまり1から反射率を引いた数)で表される。テックス,ボード,金属板などの吸音板(多数の穴をあけたものが多い),布,フェルト,ガラス繊維,岩綿などの多孔性物質,両者の組合せ等が用いられる。ホール,劇場,会議室などの音響設計に欠くことのできない材料。
→関連項目防音構造

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