Sound absorption coefficient

"Sound absorption coefficient:

 how much sound is swallowed"

 

Full reflection: α=0
no reflection: α=1

Simple explanation sound absorption coefficient:

The sound absorption coefficient α indicates how much sound energy is absorbed or "swallowed" by an absorber material.
 
If the sound is completely reflected, like the light at a mirror, α=0. In the absorber in this case 0.00 % of the sound energy is "swallowed".
If 100 % of sound energy is absorbed in the absorber, α=1.00.
The sound absorption coefficient thus indicates the ratio of the absorbed sound energy to the incident sound energy. In the absorber, the energy of the sound is converted into heat.

Exact definition of sound absorption coefficient:

The Absorption coefficient α {\displaystyle \alpha } , too: Degree of swallowingindicates which part of the power of an incident wave (e.g. sound or electromagnetic radiation such as light) is absorbed by a surface.

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