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  2. 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.

  3. Acoustic attenuation - Wikipedia

    en.wikipedia.org/wiki/Acoustic_attenuation

    In acoustics, acoustic attenuation is a measure of the energy loss of sound propagation through an acoustic transmission medium. Most media have viscosity and are therefore not ideal media. When sound propagates in such media, there is always thermal consumption of energy caused by viscosity.

  4. Attenuation - Wikipedia

    en.wikipedia.org/wiki/Attenuation

    In physics, attenuation (in some contexts, extinction) is the gradual loss of flux intensity through a medium. For instance, dark glasses attenuate sunlight, lead attenuates X-rays, and water and air attenuate both light and sound at variable attenuation rates. Hearing protectors help reduce acoustic flux from flowing into the ears.

  5. Attenuator (electronics) - Wikipedia

    en.wikipedia.org/wiki/Attenuator_(electronics)

    An attenuator is a passive broadband electronic device that reduces the power of a signal without appreciably distorting its waveform. An attenuator is effectively the opposite of an amplifier, though the two work by different methods. While an amplifier provides gain, an attenuator provides loss, or gain less than unity. An attenuator is often ...

  6. Acoustic transmission - Wikipedia

    en.wikipedia.org/wiki/Acoustic_transmission

    Example of airborne and structure-borne transmission of sound, where Lp is sound pressure level, A is attenuation, P is acoustical pressure, S is the area of the wall [m²], and τ is the transmission coefficient. Acoustic transmission is the transmission of sounds through and between materials, including air, wall, and musical instruments.

  7. Acoustical engineering - Wikipedia

    en.wikipedia.org/wiki/Acoustical_engineering

    Complex sound wave behaviors include absorption, reverberation, diffraction, and refraction. Absorption is the loss of energy that occurs when a sound wave reflects off of a surface, and refers to both the sound energy transmitted through and dissipated by the surface material. [26]

  8. Our 21 Best 30-Minute Soups That Are Creamy & Comforting - AOL

    www.aol.com/21-best-30-minute-soups-130000239.html

    Adding hummus to a soup may sound odd, but give it a try! It thickens up this 15-minute chicken and vegetable soup recipe and provides added protein and fiber. View Recipe.

  9. Attenuator - Wikipedia

    en.wikipedia.org/wiki/Attenuator

    Attenuator (electronics), an electronic device that reduces the amplitude of an electronic signal. Optical attenuator, an electronic device that reduces the amplitude of an optical signal. Attenuator (genetics), a specific regulatory sequence transcribed into RNA. Impact attenuator, used on highways as a crumple zone in case of a car crash.

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