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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. dbx (noise reduction) - Wikipedia

   en.wikipedia.org/wiki/Dbx_(noise_reduction)

   The size of the particles and the speed of the tape transport defines the maximum frequency that the media can record. For high fidelity recordings, reel-to-reel audio tape recording typically works at tape speeds of 15 or 7.5 inches-per-second (38 or 19 cm/s), but this requires a lot of tape for a given amount of recording. Lower fidelity ...

7. Denise Austin knows why New Year's resolutions fail, shares ...

   www.aol.com/denise-austin-knows-why-years...

   Denise Austin has been a pioneer in the fitness industry for 40 years, so she knows a thing or two about creating New Year's resolutions that stick.. Austin told Fox News Digital that people often ...