- Sound waves are mechanical waves that travel through a medium such as air, water, or solid objects.

- When sound waves encounter a porous material, the sound waves can be absorbed by the pores in the material.

- The pores in the material can act as small chambers that trap the sound waves and convert them into heat energy.

- The amount of sound waves that are absorbed by a porous material depends on the porosity of the material and the size of the pores.