Noise pollution is one of the scourges of urban and suburban life, which can drown out nature's melodies to cause annoyance, stress, and hearing loss. Simply put, noise is any sound one does not want to hear. Most of us respond by closing the windows and doors, feeling that putting up with a stuffy, closed-in feeling is better than enduring the noises of an urban or suburban setting.
Now an alternative is appearing. A clever use of acoustic metamaterials by Professor Sang-Hoon Kim of the Mokpo National Maritime University and Professor Seong-Hyun Lee of the Korea Institute of Machinery and Materials in South Korea will enable the design and construction of windows that allow air to pass through, but reduce environmental noise by about 35 dB.
Source: gizmag.comAdded: 8 October 2013