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2. Noise control - Wikipedia

   en.wikipedia.org/wiki/Noise_control

   The most fertile areas for roadway noise mitigation are in urban planning decisions, roadway design, noise barrier design, [14] speed control, surface pavement selection, and truck restrictions. Speed control is effective since the lowest sound emissions arise from vehicles moving smoothly at 30 to 60 kilometers per hour.

3. Noise barrier - Wikipedia

   en.wikipedia.org/wiki/Noise_barrier

   Noise barriers have been built in the United States since the mid-twentieth century, when vehicular traffic burgeoned. I-680 in Milpitas, California was the first noise barrier. [1] In the late 1960s, analytic acoustical technology emerged to mathematically evaluate the efficacy of a noise barrier design adjacent to a specific roadway. By the ...

4. Soundproofing - Wikipedia

   en.wikipedia.org/wiki/Soundproofing

   A pair of headphones being tested inside an anechoic chamber for soundproofing. Soundproofing is any means of impeding sound propagation.There are several methods employed including increasing the distance between the source and receiver, decoupling, using noise barriers to reflect or absorb the energy of the sound waves, using damping structures such as sound baffles for absorption, or using ...

5. Communication noise - Wikipedia

   en.wikipedia.org/wiki/Communication_noise

   Environmental noise can be any external noise that can potentially impact the effectiveness of communication. [2] These noises can be any type of sight (i.e., car accident, television show), sound (i.e., talking, music, ringtones), or stimuli (i.e., tapping on the shoulder) that can distract someone from receiving the message. [3]

6. Sound baffle - Wikipedia

   en.wikipedia.org/wiki/Sound_baffle

   The technology for accurate prediction of the effects of noise barrier design using a computer model to analyze roadway noise has been available since the early 1970s. The earliest published scientific design of a noise barrier may have occurred in Santa Clara County, California in 1970 for a section of the Foothill Expressway in Los Altos, California.

7. Roadway noise - Wikipedia

   en.wikipedia.org/wiki/Roadway_noise

   Noise barrier for a deeper insight to roadway noise mitigation using physical barriers; Noise cancellation for a discussion of methods to actively reduce unwanted sound; General: Noise health effects for a discussion of physiological and psychological impacts; Noise pollution for a broader discussion of environmental noise; Noise regulation for ...