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  2. Dropped ceiling - Wikipedia

    en.wikipedia.org/wiki/Dropped_ceiling

    A dropped ceiling is a secondary ceiling, hung below the main (structural) ceiling. It may also be referred to as a drop ceiling, T-bar ceiling, false ceiling, suspended ceiling, grid ceiling, drop in ceiling, drop out ceiling, or ceiling tiles and is a staple of modern construction and architecture in both residential and commercial applications.

  3. Popcorn ceiling - Wikipedia

    en.wikipedia.org/wiki/Popcorn_ceiling

    Popcorn ceiling texture. A popcorn ceiling, also known as a stipple ceiling or acoustic ceiling, is a ceiling with one of a variety of spray-on or paint-on treatments. [1] The bumpy surface is created by tiny particles of vermiculite or polystyrene, which gives the ceiling sound-deadening properties. Mixtures are available in fine, medium, and ...

  4. Line array - Wikipedia

    en.wikipedia.org/wiki/Line_array

    Sound intensity is the acoustic power per unit area, and it decreases as the surface area increases since the acoustic power is spread over a greater area. The ratio between two acoustic pressures in deciBels is expressed by the equation dB = 20log(p1/p2), so for every doubling of distance from the point source p1 = 1 and p2 = 2, thus there is ...

  5. Room acoustics - Wikipedia

    en.wikipedia.org/wiki/Room_acoustics

    The architectural details of a room influences the behaviour of sound waves within it, with the effects varying by frequency. Acoustic reflection , diffraction , and diffusion can combine to create audible phenomena such as room modes and standing waves at specific frequencies and locations, echos , and unique reverberation patterns.

  6. Suspended structure - Wikipedia

    en.wikipedia.org/wiki/Suspended_structure

    An example of a catenary-shaped suspended structure is the Eero Saarinen designed Dulles International Airport. The roof of the structure is made up of suspension cable which stretches across angled concrete columns. In the design of Dulles airport, the floor, the columns and the roof all work together to allow the walls and ceiling to float. [6]

  7. Acoustic ceiling - Wikipedia

    en.wikipedia.org/wiki/Acoustic_ceiling

    Acoustic ceiling may refer to: Dropped ceiling; Popcorn ceiling This page was last edited on 27 December 2019, at 14:27 (UTC). Text is available under the ...

  8. Ceiling - Wikipedia

    en.wikipedia.org/wiki/Ceiling

    Alternatively, ceilings may be spray painted instead, leaving the pipework and ducts exposed but painted, and using spray foam. A subset of the dropped ceiling is the suspended ceiling, wherein a network of aluminum struts, as opposed to drywall, are attached to the joists, forming a series of rectangular spaces.

  9. Acoustical engineering - Wikipedia

    en.wikipedia.org/wiki/Acoustical_engineering

    Acoustical engineering (also known as acoustic engineering) is the branch of engineering dealing with sound and vibration. It includes the application of acoustics, the science of sound and vibration, in technology. Acoustical engineers are typically concerned with the design, analysis and control of sound.

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