Sound Absorption vs. Sound InsulationThe reduction and control of noise, whether in machinery, buildings, or rooms, generally involves the use of sound absorbing materials and sound insulating materials. These materials have different properties and shouldn't be confused with each other. Unfortunately, both materials often are misused due to misconceptions. Sound absorbing materials such as acoustical tiles, carpets and drapery play an indispensable part in controlling noise generated within a room or in reverberant areas such as lobbies, corridors and staircases. Although such materials are highly effective as sound absorbers, they are relatively poor sound insulators because of their soft, porous and lightweight construction. In short, they don't block noise. To illustrate this point, imagine a wall constructed solely of acoustical tile, carpet or drapery material. Such a wall would provide virtually no resistance to the passage of sound through it. A brick wall on the other hand, is a very poor absorber of sound but it is an effective sound insulator. Its mass helps resists the passage of sound. Because sound insulators and sound absorbers are both called "acoustical treatments", confusion arises between their proper uses. Sound-absorbing materials are generally light and porous. They should not be used on the interior surface of one room with the sole intention of preventing the transmission of sound to the next room. The porosity of the material actually facilitates sound transmission! If you're looking for a good noise barrier, try our Sound Barrier MLV, which was designed to block airborne noise. It is very dense and adds "mass". Currently it is the industry standard for blocking noise. The staff at Soundproofing America will help you chose the right products for your project. We pride ourselves in getting things done right the first time. We will assist you in deciding whether to use barriers or absorbers, closed cell foam or mass loaded vinyl. Questions? Please call us so we can assist you. |
141 North Pacific Street, Ste E,
San Marcos, CA 92069
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