The influence of finite cavities on the sound insulation of double-plate structures
(2005) In Journal of the Acoustical Society of America 117(6). p.3727-3739- Abstract
- Lightweight walls are often designed as frameworks of studs with plates on each side-a double-plate structure. The studs constitute boundaries for the cavities, thereby both affecting the sound transmission directly by short-circuiting the plates, and indirectly by disturbing the sound field between the plates. The paper presents a deterministic prediction model for airborne sound insulation including both effects of the studs. A spatial transform technique is used, taking advantage of the periodicity. The acoustic field inside the cavities is expanded by means of cosine-series. The transmission coefficient (angle-dependent and diffuse) and transmission loss are studied. Numerical examples are presented and comparisons with measurement are... (More)
- Lightweight walls are often designed as frameworks of studs with plates on each side-a double-plate structure. The studs constitute boundaries for the cavities, thereby both affecting the sound transmission directly by short-circuiting the plates, and indirectly by disturbing the sound field between the plates. The paper presents a deterministic prediction model for airborne sound insulation including both effects of the studs. A spatial transform technique is used, taking advantage of the periodicity. The acoustic field inside the cavities is expanded by means of cosine-series. The transmission coefficient (angle-dependent and diffuse) and transmission loss are studied. Numerical examples are presented and comparisons with measurement are performed. The result indicates that a reasonably good agreement between theory and measurement can be achieved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/237385
- author
- Brunskog, Jonas LU
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of the Acoustical Society of America
- volume
- 117
- issue
- 6
- pages
- 3727 - 3739
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- wos:000229718500043
- pmid:16018476
- scopus:20444370644
- ISSN
- 1520-8524
- DOI
- 10.1121/1.1904264
- language
- English
- LU publication?
- yes
- id
- b974b084-a648-4040-aafc-7c15ecbb3a64 (old id 237385)
- date added to LUP
- 2016-04-01 17:01:13
- date last changed
- 2022-04-15 08:42:14
@article{b974b084-a648-4040-aafc-7c15ecbb3a64, abstract = {{Lightweight walls are often designed as frameworks of studs with plates on each side-a double-plate structure. The studs constitute boundaries for the cavities, thereby both affecting the sound transmission directly by short-circuiting the plates, and indirectly by disturbing the sound field between the plates. The paper presents a deterministic prediction model for airborne sound insulation including both effects of the studs. A spatial transform technique is used, taking advantage of the periodicity. The acoustic field inside the cavities is expanded by means of cosine-series. The transmission coefficient (angle-dependent and diffuse) and transmission loss are studied. Numerical examples are presented and comparisons with measurement are performed. The result indicates that a reasonably good agreement between theory and measurement can be achieved.}}, author = {{Brunskog, Jonas}}, issn = {{1520-8524}}, language = {{eng}}, number = {{6}}, pages = {{3727--3739}}, publisher = {{American Institute of Physics (AIP)}}, series = {{Journal of the Acoustical Society of America}}, title = {{The influence of finite cavities on the sound insulation of double-plate structures}}, url = {{http://dx.doi.org/10.1121/1.1904264}}, doi = {{10.1121/1.1904264}}, volume = {{117}}, year = {{2005}}, }