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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. Acoustical engineering - Wikipedia

    en.wikipedia.org/wiki/Acoustical_engineering

    Besides noise control, acoustical engineering also covers positive uses of sound, such as the use of ultrasound in medicine, programming digital synthesizers, designing concert halls to enhance the sound of orchestras [2] and specifying railway station sound systems so that announcements are intelligible.

  4. Sound attenuator - Wikipedia

    en.wikipedia.org/wiki/Sound_attenuator

    A sound attenuator, or duct silencer, sound trap, or muffler, is a noise control acoustical treatment of Heating Ventilating and Air-Conditioning (HVAC) ductwork designed to reduce transmission of noise through the ductwork, either from equipment into occupied spaces in a building, or between occupied spaces.

  5. 3 Women Found Dead Inside Ohio Home in 'Alarming and ... - AOL

    www.aol.com/3-women-found-dead-inside-140501113.html

    A homicide investigation is underway after three women were found dead inside a Columbus, Ohio residence over the weekend. On Saturday, Dec. 14 just before 4 p.m. local time, Columbus Police ...

  6. Head of Ohio's teacher pension fund retires Sunday, saying ...

    www.aol.com/head-ohios-teacher-pension-fund...

    The outgoing head of Ohio's troubled teachers retirement system said that she is leaving the fund in strong fiscal condition, despite the turmoil at the top that her successor will inherit. In a ...

  7. New candidate emerges in crowded field as possible ... - AOL

    www.aol.com/candidate-emerges-crowded-field...

    Ohio Gov. Mike DeWine is considering attorney Mehek Cooke to fill the seat being left by Sen. JD Vance once he moves on to the White House in January.

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