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  2. Acoustic panel - Wikipedia

    en.wikipedia.org/wiki/Acoustic_panel

    An acoustic board is a board made from sound absorbing materials, designed to provide sound insulation. [3] [4] Between two outer walls sound absorbing material is inserted and the wall is porous. Thus, when sound passes through an acoustic board, the intensity of sound is decreased. The loss of sound energy is balanced by producing heat energy.

  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. Noise control - Wikipedia

    en.wikipedia.org/wiki/Noise_control

    Many of these techniques rely upon material science applications of constructing sound baffles or using sound-absorbing liners for interior spaces. Industrial noise control is a subset of interior architectural control of noise, with emphasis on specific methods of sound isolation from industrial machinery and for protection of workers at their ...

  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. Building envelope - Wikipedia

    en.wikipedia.org/wiki/Building_envelope

    Walls do not get as severe water exposure as roofs but still leak water. Types of wall systems with regard to water penetration are barrier, drainage and surface-sealed walls. [5] Barrier walls are designed to allow water to be absorbed but not penetrate the wall, and include concrete and some masonry walls.

  7. 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.

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