Question

explain the construction of sound proof room

Answer 1

Soundproof floors and ceilings.

You do not need to soundproof the floor if there is no room below you.

Heavy concrete ceilings won't benefit much from the additional mass of drywall and damping compound. Instead, add a drywall layer with an air gap in between, or fill the gap with fiberglass insulation.

Answer 2

Soundproofing is any means of reducing the sound pressure with respect to a specified sound source and receptor. There are several basic approaches to reducing sound: increasing the distance between source and receiver, using noise barriers to reflect or absorb the energy of the sound waves, using damping structures such as sound baffles, or using active antinoise sound generators.