Acoustical Consulting, Noise Control Engineering
In order be sure you have achieved the desired result for sound barrier design you may want to secure the services of an acoustical consultant or noise control engineer. These professionals can help determine how much of noise problem exists and can define the best solution for the specific application. Here are links to important sites:
Sound Barrier or Noise Barrier Design Considerations
While there are many factors that affect the performance of noise barriers at the most basic level they need three qualities:
- They must be sufficiently dense to block the noise.
- There must be no open spaces in the barrier as even tiny cracks will seriously degrade performance.
- They must block at least line of sight from the noise generator to the noise receptor.
Highway Noise Barriers
The noise pollution generated by traffic is a significant and growing problem for transportation agencies. Generally, traffic noise is addressed in one of three ways: controlling the noise at its source, directing the path of sound, or using regulatory and receiver controls or policies. Transportation agencies typically use the second alternative (directing the path of sound), because it falls within their jurisdictions. Moreover, noise barriers, particularly in urban areas, have been the method of choice because they are effective and comparatively inexpensive.
The U.S. Department of Transportation, Research and Special Programs Administration, John A. Volpe National Transportation Systems Center, Acoustics Facility, in support of the Federal Highway Administration, Office of Natural Environment, has developed the updated "FHWA Highway Noise Barrier Design Handbook." This document reflects substantial improvements and changes in noise barrier design that have evolved since the original 1976 publication.
http://www.fhwa.dot.gov/environment/noise/manual.htm
Industrial Noise Suppression
Industrial applications range from walls around industrial sites, loading docks and trucking depots to modules that can be used to quiet HVAC chillers and compressors, etc.
|
