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2. Acoustic foam - Wikipedia

   en.wikipedia.org/wiki/Acoustic_foam

   The objective of acoustic foam is to improve or change a room's sound qualities by controlling residual sound through absorption. [6] This purpose requires strategic placement of acoustic foam panels on walls, ceilings, floors and other surfaces.

3. 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.

4. Soundproofing - Wikipedia

   en.wikipedia.org/wiki/Soundproofing

   A pair of headphones being tested inside an anechoic chamber for soundproofing. Soundproofing is any means of impeding sound propagation.There are several methods employed including increasing the distance between the source and receiver, decoupling, using noise barriers to reflect or absorb the energy of the sound waves, using damping structures such as sound baffles for absorption, or using ...

5. IKEA launches curtains that purify the air in your home - AOL

   www.aol.com/news/ikea-launches-curtains-purify...

   For premium support please call: 800-290-4726 more ways to reach us

6. 50 Times Cheap Fixes Had A Major Impact On Home Life - AOL

   www.aol.com/55-people-share-relatively-cheap...

   Watched the return area at IKEA for weeks until I'd found two matching sinks and a floating vanity and faucets, all 50% off. Large format tiles on the floor, up the back wall and around the tub.

7. Sound transmission class - Wikipedia

   en.wikipedia.org/wiki/Sound_transmission_class

   The STC or sound transmission class is a single number method of rating how well wall partitions reduce sound transmission. [3] The STC provides a standardized way to compare products such as doors and windows made by competing manufacturers. A higher number indicates more effective sound insulation than a lower number.