Question

f you were trying to build a soundproof room, which of the following materials would you choose in order to absorb the most sound, based on the coefficient of absorption for each material? A. Wood B. Carpet C. Concrete D. Heavy curtains

Answer 1

Coefficients of Absorption for Common Materials

(from Penn Foster) ⭐⭐⭐⭐⭐

Material Coefficient of Absorption

Perforated acoustic ceiling material 60%

Heavy curtains (D) 50%

Carpeting (B) 20%

Wood (A) 5%

Plaster 3%

Clay tile 3%

Concrete (C) 2%

The answer is D. Heavy curtains ✅

Answer 2

If you don't have the coefficient of absorption, I would say Heavy curtains.

Hope this helps :)