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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. Transmission loss (duct acoustics) - Wikipedia

    en.wikipedia.org/wiki/Transmission_Loss_(duct...

    + is the particle velocity of the incident wave in the inlet, towards muffler; v o {\displaystyle v_{o}} is the particle velocity of the transmitted wave in the outlet, away from muffler. Note that p i + {\displaystyle p_{i+}} cannot be measured directly in isolation from the reflected wave pressure p i − {\displaystyle p_{i-}} (in the inlet ...

  4. Muffler - Wikipedia

    en.wikipedia.org/wiki/Muffler

    Silencer (silver) and exhaust pipe on a Ducati motorcycle A silencer cut open to show the insulation, chambers and piping inside the shell. A muffler (North American and Australian English) [1] or silencer (British English) is a device for reducing the noise emitted by the exhaust of an internal combustion engine—especially a noise-deadening device forming part of the exhaust system of an ...

  5. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  6. The best Dutch ovens of 2025, tested by AOL

    www.aol.com/lifestyle/best-dutch-ovens-190855583...

    Here are the pros and cons of each option: Enameled cast iron: Dutch ovens are most commonly made from enameled cast iron, which offers superior heat retention and even cooking.

  7. Meta to end fact-checking, replacing it with system similar ...

    www.aol.com/meta-end-fact-checking-replacing...

    Meta CEO Mark Zuckerberg on Tuesday said the social media company is ending its fact-checking program and replacing it with a community-driven system similar to that of Elon Musk's X.

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