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Active noise control (ANC), also known as noise cancellation (NC), or active noise reduction (ANR), is a method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first.
FAIST Anlagenbau GmbH is one of the biggest manufacturer of noise control facilities and aero-acoustic wind tunnel treatment. The company which is located in Niederraunau (Bavaria, Germany) manufactures and installs noise control installations, noise control enclosures as well as acoustic test chambers and aero-acoustic wind tunnels worldwide.
Industrial noise is traditionally associated with manufacturing settings where industrial machinery produces intense sound levels, [22] often upwards of 85 decibels. While this circumstance is the most dramatic, there are many other work environments where sound levels may lie in the range of 70 to 75 decibels, entirely composed of office ...
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The hierarchy of controls [17] is a guideline for reducing hazardous noise. Before starting a noise reduction program, base noise levels should first be recorded. [18] After this the company can start to eliminate the noise source. If the noise source cannot be eliminated, the company must try to reduce the noise with alternative methods.
At outdoor concerts like Woodstock, acoustic analysis is critical to creating the best experience for the audience and the performers. Environmental acoustics is concerned with the control of noise and vibrations caused by traffic, aircraft, industrial equipment, recreational activities and anything else that might be considered a nuisance. [1]
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