Investigation of additional insertion loss from t-profile and absorptive noise barriers (Record no. 2616)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 01969nam a22001697a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20160722144810.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 160722b xxu||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Transcribing agency | National Acoustics Laboratories |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Jurevicius, Darren |
| 245 ## - TITLE STATEMENT | |
| Title | Investigation of additional insertion loss from t-profile and absorptive noise barriers |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc | This paper presents the findings into a study of the relative performance of custom-design noise walls of different heights, with and without T-profile noise wall tops of various dimensions. The study was undertaken at a test facility using noise walls of heights 2.4 m and 3.5 m, with T-profile widths of 600 and 1200 mm. The testing was undertaken using measurement positions of varying height behind the wall, with a loudspeaker used to generate an MLS-type signal. The impulse response was stored for post-processing and calculation of the spectral insertion losses was carried out for each test. Additionally, the influence of absorptive treatment on the T-profile was tested. These results were compared to the untreated T-profile, the standard noise wall and a standard noise wall with an absorptive capping but without a T-profile. The reduction achieved with the T-shaped profile is quantified in terms of both an additional spectral insertion loss relative to the base wall as well as the equivalent reduction in noise wall height that can be obtained while maintaining performance by using the modified top. The performance of the different noise wall configurations is also compared to the theoretical and tested performance of other modified noise wall types. Finally, the practical application of the tested insertion loss results to predicted noise levels is discussed. |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Tom Evans |
| 773 0# - HOST ITEM ENTRY | |
| Title | Acoustic s 2015 Hunter Valley 15-18 November 2015 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://dspace.nal.gov.au/xmlui/bitstream/handle/123456789/428/p99.pdf?sequence=1&isAllowed=y">http://dspace.nal.gov.au/xmlui/bitstream/handle/123456789/428/p99.pdf?sequence=1&isAllowed=y</a> |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Universal Decimal Classification |
| Koha item type | Journal article |
No items available.