Question

Explain why some materials are good at reflecting and absorbing sounds.

Answer 1

Answer:

In general, soft, pliable, or porous materials (like cloths) serve as good acoustic insulators - absorbing most sound, whereas dense, hard, impenetrable materials (such as metals) reflect most.  Absorption coefficients can be measured using a reverberation room, which is the opposite of an anechoic chamber

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Answer 2

Answer:

we know that some materials are good at reflecting and absorbing sounds due to their density