Question

if you were trying to build a soundproof room, which of the following materials would you choose to absorb the most sound, based on the coefficient of absorption for each material?
a) carpet
b) wood
c) concrete
d) heavy curtains

Explanation:

Sound absorption coefficients measure how much sound a material absorbs (0 = no absorption, 1 = full absorption). Heavy curtains have a much higher sound absorption coefficient (typically 0.5-0.8 across mid-high frequencies) compared to carpet (0.2-0.6), wood (0.03-0.15), and concrete (0.01-0.05). They are designed to trap and dissipate sound energy effectively.

Answer:

D) Heavy curtains