Sound Absorption & Sound Insulation Are Two Different Concepts.

Absorb The Main Reflections On The Wall Surfaces To The Maximum, Absorbing Materials Are To Control The Main Reflections And Help To Reduce The Flutter Echoes And The Standing Waves!

Prevention Reflection Of Sound Waves or Absorb Echoes Softer Porous Materials Such As Rockwool, Sponge, Fabric or Carpeting --​Work As Sound Absorbers.