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2. Acoustic panel - Wikipedia

   en.wikipedia.org/wiki/Acoustic_panel

   An acoustic board is a board made from sound absorbing materials, designed to provide sound insulation. [3] [4] Between two outer walls sound absorbing material is inserted and the wall is porous. Thus, when sound passes through an acoustic board, the intensity of sound is decreased. The loss of sound energy is balanced by producing heat energy.

3. Acoustic foam - Wikipedia

   en.wikipedia.org/wiki/Acoustic_foam

   A close-up image of acoustic foam. Acoustic foam is an open celled foam used for acoustic treatment. It attenuates airborne sound waves, reducing their amplitude, for the purposes of noise reduction or noise control. [1] The energy is dissipated as heat. [2] Acoustic foam can be made in several different colors, sizes and thickness. [3]

4. List of insulation materials - Wikipedia

   en.wikipedia.org/wiki/List_of_insulation_materials

   This is a list of insulation materials used around the world.. Typical R-values are given for various materials and structures as approximations based on the average of available figures and are sorted by lowest value.

5. Acoustic plaster - Wikipedia

   en.wikipedia.org/wiki/Acoustic_plaster

   Compared to acoustic plaster, acoustic panels are the most commonly used material for controlling the sound environment of space. Acoustic panels were often made of a mineral wool composition that is very absorbent of sound. [2] Although acoustic panels are common in basements or recreational areas, they are seldom used in living spaces due to ...

6. Noise control - Wikipedia

   en.wikipedia.org/wiki/Noise_control

   The ideal acoustical panels are those without a face or finish material that could interfere with the performance of the acoustical infill, but aesthetic and safety concerns typically lead to fabric coverings or other finishing materials to minimize impedance. Panel finishings are occasionally made of a porous configuration of wood or metal.

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