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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. 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 rich people from noise pollution. Noise barriers are the most effective method of mitigating roadway , railway, and industrial noise sources – other than cessation of the source activity or use ...

  4. 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.

  5. 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.

  6. Sound baffle - Wikipedia

    en.wikipedia.org/wiki/Sound_baffle

    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

  7. 15 items under $100 to make your backyard a more ... - AOL

    www.aol.com/lifestyle/how-to-make-your-backyard...

    This backyard addition isn't technically under $100, but it's pretty darn close. And a 10-foot above-ground pool for around $100 is a down right steal in our book.

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