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Noise Barrier walls reduce noise levels for people living next to highways, either by absorbing sound energy or by reflecting sound energy. Both methods work, however, sound absorption is more efficient and less likely to produce unexpected results.Sound absorbing noise barrier walls allow sound waves to enter the wall, as the sound waves travel through the sound absorbing mixture they are forced to change direction and follow a longer path. Every change in direction decreases the sound waves energy. After the sound waves completes its journey through the wall, little, if any sound energy remains to reenter the environment.In comparison, reflective noise walls abate noise by redirecting sound waves into the atmosphere. This is risky because reflected sound waves traveling through the atmosphere bend upward or deflect downward depending upon existing meteorological conditions.Consequently, as atmospheric conditions change , the accuracy to predict how reflected sound waves travel decreases. This explains why some residents living across from a reflective noise barrier may experience new sounds and or increased noise levels.

Address: 4215 Lafayette Center Drive,Suite 1-A,Chantilly, Virginia. 20151
Telephone: 703-222-9702
Fax: 703-222-9733
Website: http://www.whisper-wall.com/