SOUND INSULLATION PRODUCTS
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These are the most used soundproofing materials; each category has different best use scenarios. Each of these acoustic materials falls into one of these categories: Sound Absorbing, Sound Insulation, Sound Dampening, and Decoupling.
Rather than reflecting noise, sound waves are absorbed into this type of material, softening echo and reverberation to improve the sound in a room.
One useful material is fabrics, used for heavy acoustic curtains and blankets. The most popular though is acoustic foam, a special material designed with special cell structure and density to deflect, dampen, and absorb unwanted sounds. They are commonly used in studios, theaters, and entertainment centers.