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2. 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 ...

3. 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 to

4. Acoustical engineering - Wikipedia

   en.wikipedia.org/wiki/Acoustical_engineering

   Noise control is a set of strategies to reduce noise pollution by reducing noise at its source, by inhibiting sound propagation using noise barriers or similar, or by the use of ear protection (earmuffs or earplugs). [20] Control at the source is the most cost-effective way of providing noise control.

5. Portsmouth I-95 sound walls: When they're coming, how ... - AOL

   www.aol.com/portsmouth-95-sound-walls-theyre...

   NH officials putting sound walls in Portsmouth explain decibels of noise reduction and timeline for project residents have wanted for many years. Portsmouth I-95 sound walls: When they're coming ...

6. Noise barriers along I-41 in Fox Cities are expected to cut ...

   www.aol.com/noise-barriers-along-41-fox...

   The cost of the new noise barriers will be added to the I-41 expansion project, and homeowners will not be responsible for their cost. All barriers are expected to cost $20 million, according to I ...

7. Architectural acoustics - Wikipedia

   en.wikipedia.org/wiki/Architectural_acoustics

   Architectural acoustics can be about achieving good speech intelligibility in a theatre, restaurant or railway station, enhancing the quality of music in a concert hall or recording studio, or suppressing noise to make offices and homes more productive and pleasant places to work and live in. [3] Architectural acoustic design is usually done by ...