Engineers Advance Soundproofing for Buildings
Noise pollution is becoming more and more of a concern for people throughout the U.S. and other countries. After all, noise has been shown to cause elevated levels of stress and is a contributor to many different types of illness. In response to this concern, scientists are currently developing efficient sound absorbers that can be used in new construction to help reduce noise pollution.
Although sound-reducing materials have existed for some time, until just recently these materials presented problems for architects and designers. Whether the material was too heavy, not attractive, not fire-resistant or whatever, the earlier types of materials used for noise abatement were simply not working.
Recently, however, scientists at the Fraunhofer Institute for Building Physics (IBP) began work on a new generation of building material designed to be effective at noise abatement as well as flexible and easy to use in different types of construction. Microperforated absorbers are actually membranes with a multitude of tiny holes in them. When waves of sound hit the surface of the membrane, friction occurs between the moving air and the edge of the tiny holes, which results in sound being absorbed. These sound-absorbing membranes are totally transparent and can be used either on the exterior of buildings and other structures or on the interior walls and ceilings of a building during construction.
Another new development by the scientists at IBP is an elastic surface comprised of tubes laid side-by-side with a tiny amount of space between each one. This sound-absorbing material will be particularly useful in hygiene-sensitive areas.
To learn more, visit the full article http://www.sciencedaily.com/releases/2013/01/130114133329.htm
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