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2. Acoustic quieting - Wikipedia

   en.wikipedia.org/wiki/Acoustic_quieting

   Sound reflections: by limiting the reflection using many methods, e.g. by using acoustic absorption (deadening) materials, trapping the sound, opening a "window" to let sound out, etc. By analyzing the entire sequence of events, from the source to the observer, an acoustic engineer can provide many ways to quieten the machine.

3. 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 ...

4. Absorption (acoustics) - Wikipedia

   en.wikipedia.org/wiki/Absorption_(acoustics)

   Soundproofing aims to absorb as much sound energy (often in particular frequencies) as possible converting it into heat or transmitting it away from a certain location. [ 3 ] In general, soft, pliable, or porous materials (like cloths) serve as good acoustic insulators - absorbing most sound, whereas dense, hard, impenetrable materials (such as ...

5. Noise control - Wikipedia

   en.wikipedia.org/wiki/Noise_control

   Common sound absorption materials include decoupled lead-based tiles, open cell foams and fiberglass; Vibration damping: applicable for large vibrating surfaces. The damping mechanism works by extracting the vibration energy from the thin sheet and dissipating it as heat. A common material is sound deadened steel.

6. Sound transmission class - Wikipedia

   en.wikipedia.org/wiki/Sound_transmission_class

   Though the terms sound absorption and damping are often interchangeable when discussing room acoustics, acousticians define these as two distinct properties of sound-isolating walls. Several gypsum manufacturers offer specialty products which use constrained layer damping , which is a form of viscous damping .

7. Insulated glazing - Wikipedia

   en.wikipedia.org/wiki/Insulated_glazing

   The most widely used glazing configurations for sound dampening include laminated glass with varied thickness of the interlayer and thickness of the glass. Including a structural, thermally improved aluminum thermal barrier air spacer in the insulating glass can improve acoustical performance by reducing the transmission of exterior noise ...

8. Designers Sound Off on the Most Controversial Paint Topics - AOL

   www.aol.com/news/designers-sound-off-most...

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9. Talk:Soundproofing - Wikipedia

   en.wikipedia.org/wiki/Talk:Soundproofing

   A vacuum seal is important for soundproofing since sound waves in air are a compression / vacuum wave. This creates an important sound barrier! Foam Rubber creates damping, so does fiberous materials like bedding, cotton, fiber glass and so on. But these materials will just let sound or air through!