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2. Noise barrier - Wikipedia

   en.wikipedia.org/wiki/Noise_barrier

   A noise barrier (also called a soundwall, noise wall, sound berm, sound barrier, or acoustical barrier) is an exterior structure designed to protect inhabitants of sensitive land use areas from noise pollution. Noise barriers are the most effective method of mitigating roadway, railway, and industrial noise sources – other than cessation of ...

3. Noise control - Wikipedia

   en.wikipedia.org/wiki/Noise_control

   The main areas of noise mitigation or abatement are: transportation noise control, architectural design, urban planning through zoning codes, [1] and occupational noise control. Roadway noise and aircraft noise are the most pervasive sources of environmental noise. [2] Social activities may generate noise levels that consistently affect the health of populations residing in or occupying areas ...

4. Noise pollution - Wikipedia

   en.wikipedia.org/wiki/Noise_pollution

   Noise pollution, or sound pollution, is the propagation of noise or sound with ranging impacts on the activity of human or animal life, most of which are harmful to a degree. The source of outdoor noise worldwide is mainly caused by machines, transport and propagation systems. [1][2][3] Poor urban planning may give rise to noise disintegration or pollution, side-by-side industrial and ...

5. Sound transmission class - Wikipedia

   en.wikipedia.org/wiki/Sound_transmission_class

   Sound Transmission Class (or STC) is an integer rating of how well a building partition attenuates airborne sound. In the US, it is widely used to rate interior partitions, ceilings, floors, doors, windows and exterior wall configurations.

6. Environmental noise - Wikipedia

   en.wikipedia.org/wiki/Environmental_noise

   Environmental noise is an accumulation of noise pollution that occurs outside. This noise can be caused by transport, industrial, and recreational activities. [1] Noise is frequently described as 'unwanted sound'. Within this context, environmental noise is generally present in some form in all areas of human, animal, or environmental activity.

7. Sound baffle - Wikipedia

   en.wikipedia.org/wiki/Sound_baffle

   Sound baffles on the wall of a recording studio. A sound baffle is a construction or device which reduces the strength (level) of airborne sound. Sound baffles are a fundamental tool of noise mitigation, the practice of minimizing noise pollution or reverberation. An important type of sound baffle is the noise barrier constructed along highways ...