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2. 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 ...

3. 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. Outside the US, the ISO Sound Reduction Index (SRI) is used. The STC rating very roughly reflects the ...

4. 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 ...

5. DC Council holds hearing on bill requiring soundproofing for ...

   www.aol.com/news/dc-council-holds-hearing-bill...

   Bob Barnard. September 24, 2024 at 6:26 PM. WASHINGTON - D.C. council members are working on legislation to crack down on ever-growing noise pollution. A bill called the Harmonious Living ...

6. Acoustic plaster - Wikipedia

   en.wikipedia.org/wiki/Acoustic_plaster

   Acoustic plaster. Acoustic plaster is plaster which contains fibres or aggregate so that it absorbs sound. Early plasters contained asbestos, but newer ones consist of a base layer of absorptive substrate panels, which are typically mineral wool, or a non-combustible inorganic blow-glass granulate. A first finishing layer is then applied on top ...

7. Boar's Head expands recall to include 7 million more pounds ...

   www.aol.com/lifestyle/boars-head-expands-recall...

   The popular deli meat company Boar's Head is recalling an additional 7 million pounds of ready-to-eat products made at a Virginia plant as an investigation into a deadly outbreak of listeria food ...