| dc.creator |
Pfretzschner, Jaime |
|
| dc.creator |
Rodríguez Alves, Rosa M.ª |
|
| dc.date |
2008-07-07T14:34:44Z |
|
| dc.date |
2008-07-07T14:34:44Z |
|
| dc.date |
2001-09 |
|
| dc.date.accessioned |
2017-01-31T02:41:43Z |
|
| dc.date.available |
2017-01-31T02:41:43Z |
|
| dc.identifier |
17th International Congress on Acoustics, Architectural Acoustics, Measurement in building acoustics, 7A.11.03 |
|
| dc.identifier |
88-88387-01-3 |
|
| dc.identifier |
http://hdl.handle.net/10261/5634 |
|
| dc.identifier.uri |
http://dspace.mediu.edu.my:8181/xmlui/handle/10261/5634 |
|
| dc.description |
Communication presented at the 17th International Congress on Acoustics, Rome, 2-7 September 2001. |
|
| dc.description |
This paper presents a theoretical and experimental study that shows the presence of a horizontal asymptote of the absorption
coefficient function α(f) in relation with the thickness of the sample. This asymptote conduces to the existence of a critical depth, characterized by a certain attenuation of the sound wave, that limits the absorbing properties of the material. Above this thickness, α(f) does not change noticeably and a progressive increase of the layer thickness only means an unnecessary waste of acoustic material. |
|
| dc.description |
This work has been partially supported by the National Research and Development (R&D) Program within the Project AMB..98-1029-C04-01. |
|
| dc.description |
Peer reviewed |
|
| dc.format |
171488 bytes |
|
| dc.format |
application/pdf |
|
| dc.language |
eng |
|
| dc.publisher |
Acoustical Society of Italy |
|
| dc.rights |
openAccess |
|
| dc.subject |
Absorption coefficient function |
|
| dc.subject |
Acoustical absorption |
|
| dc.subject |
Porous acoustic materials |
|
| dc.subject |
Thickness |
|
| dc.subject |
Critical depth |
|
| dc.title |
Acoustical Absorption and Critical Thickness |
|
| dc.type |
Comunicación de congreso |
|