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A tapping machine is a device used to test the impact sound insulation of floors, for measurements of impact noise (noise of footsteps) in the field of building acoustics. The standard tapping machine [1] has five hammers placed in a line. Each hammer is lifted and dropped in turn, creating 10 impacts per second on the floor. In the room below ...
Acoustic foam is a lightweight material made from polyurethane (either polyether or polyester) or extruded melamine foam. [8] It is usually cut into tiles. One surface of these tiles often features pyramid, cone, wedge, or uneven cuboid shapes. Acoustic foam tiles are suited to placing on sonically reflective surfaces to act as sound absorbers ...
Steel wool makes all the difference. Steel wool may provide outstanding fire protection and can withstand heat up to 2150ºF. Paired with fire-rated drywall and other products, a homeowner or ...
Impact insulation class (or IIC) is an integer -number rating of how well a building floor attenuates impact sounds, such as footsteps. A larger number means more attenuation. The scale, like the decibel scale for sound, is logarithmic. The IIC is derived from ASTM method E989, which in turn uses a tapping machine specified in ASTM method E492. [1]
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 ...
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.
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