Determination on sound transmission loss of sound insulation material / Nurul Asyikin Abu Bakar
This study has three major purposes which are to design an acoustic box, to determine the measurement error of the acoustic box based on a standard sample and to determine the sound transmission loss of selected sound insulation material. Generally, the sound transmission loss is a measure of sou...
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| Format: | Student Project |
| Language: | English |
| Published: |
Faculty Of Applied Sciences
2017
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| Subjects: | |
| Online Access: | https://ir.uitm.edu.my/id/eprint/23813/ |
| _version_ | 1848805836038602752 |
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| author | Abu Bakar, Nurul Asyikin |
| author_facet | Abu Bakar, Nurul Asyikin |
| author_sort | Abu Bakar, Nurul Asyikin |
| building | UiTM Institutional Repository |
| collection | Online Access |
| description | This study has three major purposes which are to design an acoustic box, to
determine the measurement error of the acoustic box based on a standard sample
and to determine the sound transmission loss of selected sound insulation
material. Generally, the sound transmission loss is a measure of sound insulating
material's properties by transferring the sound energy through a barrier from one
medium to another. Sound transmission loss in investigated based on selected
sound insulation materials which are medium density fiberboard, polyurethane
foam, and gypsum board. In addition, these materials are selected based on their
availability in the market. In the first part, the acoustic box is designed by using
the medium density fiberboard and polyurethane foam is used to insulate the box.
Then, sound intensity formula is applied to determine the value of sound
transmission loss obtained from the recorded sound decibels by using sound
decibel meter. The measurement of sound transmission loss is based on three
different frequencies range at 2000 Hz, 3000 Hz and 4000 Hz which selected due
to the sensitivity on human ears where thickness of selected sound insulation
materials is uniform. In the second part, the polyurethane foam is used as a
standard sample by using the impedance tube as a reference value of sound
transmission loss. The measurement error of the acoustic box is determined by the
correction factor for the sound transmission loss of standard sample to determine
the corrected value of sound transmission loss of each selected material that
should be obtained from the acoustic box. In conclusion, polyurethane foam has a
very poor performance of sound transmission loss compared to medium density
fiberboard and gypsum board respectively. For recommendation, the acoustic box
can be enhanced by using the partition and the sample can be tested by using
different thicknesses. |
| first_indexed | 2025-11-14T22:17:21Z |
| format | Student Project |
| id | uitm-23813 |
| institution | Universiti Teknologi MARA |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T22:17:21Z |
| publishDate | 2017 |
| publisher | Faculty Of Applied Sciences |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uitm-238132020-04-18T13:12:27Z https://ir.uitm.edu.my/id/eprint/23813/ Determination on sound transmission loss of sound insulation material / Nurul Asyikin Abu Bakar Abu Bakar, Nurul Asyikin Acoustics. Sound Absorption of sound. Propagation of sound This study has three major purposes which are to design an acoustic box, to determine the measurement error of the acoustic box based on a standard sample and to determine the sound transmission loss of selected sound insulation material. Generally, the sound transmission loss is a measure of sound insulating material's properties by transferring the sound energy through a barrier from one medium to another. Sound transmission loss in investigated based on selected sound insulation materials which are medium density fiberboard, polyurethane foam, and gypsum board. In addition, these materials are selected based on their availability in the market. In the first part, the acoustic box is designed by using the medium density fiberboard and polyurethane foam is used to insulate the box. Then, sound intensity formula is applied to determine the value of sound transmission loss obtained from the recorded sound decibels by using sound decibel meter. The measurement of sound transmission loss is based on three different frequencies range at 2000 Hz, 3000 Hz and 4000 Hz which selected due to the sensitivity on human ears where thickness of selected sound insulation materials is uniform. In the second part, the polyurethane foam is used as a standard sample by using the impedance tube as a reference value of sound transmission loss. The measurement error of the acoustic box is determined by the correction factor for the sound transmission loss of standard sample to determine the corrected value of sound transmission loss of each selected material that should be obtained from the acoustic box. In conclusion, polyurethane foam has a very poor performance of sound transmission loss compared to medium density fiberboard and gypsum board respectively. For recommendation, the acoustic box can be enhanced by using the partition and the sample can be tested by using different thicknesses. Faculty Of Applied Sciences 2017 Student Project NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/23813/1/PPb_NURUL%20ASYIKIN%20ABU%20BAKAR%20AS%20C%2017_5.PDF Abu Bakar, Nurul Asyikin (2017) Determination on sound transmission loss of sound insulation material / Nurul Asyikin Abu Bakar. (2017) [Student Project] <http://terminalib.uitm.edu.my/23813.pdf> (Unpublished) |
| spellingShingle | Acoustics. Sound Absorption of sound. Propagation of sound Abu Bakar, Nurul Asyikin Determination on sound transmission loss of sound insulation material / Nurul Asyikin Abu Bakar |
| title | Determination on sound transmission loss of sound
insulation material / Nurul Asyikin Abu Bakar |
| title_full | Determination on sound transmission loss of sound
insulation material / Nurul Asyikin Abu Bakar |
| title_fullStr | Determination on sound transmission loss of sound
insulation material / Nurul Asyikin Abu Bakar |
| title_full_unstemmed | Determination on sound transmission loss of sound
insulation material / Nurul Asyikin Abu Bakar |
| title_short | Determination on sound transmission loss of sound
insulation material / Nurul Asyikin Abu Bakar |
| title_sort | determination on sound transmission loss of sound
insulation material / nurul asyikin abu bakar |
| topic | Acoustics. Sound Absorption of sound. Propagation of sound |
| url | https://ir.uitm.edu.my/id/eprint/23813/ |