| Download | - View accepted manuscript: On the importance of the direct field in structure borne transmission in framed constructions (PDF, 754 KiB)
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| Author | Search for: Nightingale, T. R. T.1; Search for: Halliwell, R. E.1; Search for: Quirt, J. D.1 |
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| Affiliation | - National Research Council of Canada. NRC Institute for Research in Construction
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| Format | Text, Article |
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| Conference | Forum Acusticum 2005, August 29, 2005, Budapest, Hungary |
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| Subject | Flanking; Floors; flanking; model; prediction; impact sound; direct field |
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| Abstract | This paper reports findings from a recently completed study of sound transmission in wood framed buildings. The paper begins by showing that the impact sound insulation of floor flanking paths is strongly dependent on the distance from the flanking junction and that adding a topping to the floor modifies the sensitivity to source location. Vibration draw-away measures on the exposed floor surface are used to demonstrate the attenuation of structure borne vibration is different in the directions parallel and perpendicular to the joists, and the attenuation with distance can be significantly modified by the presence of a topping. These vibration measures and the change in Flanking-NISPL with source position indicate that diffuse field assumptions are not valid and suggest that some form of a direct field controls the incident structure borne power. It is also shown that vibration draw-away measures (made on the exposed surface of the floor) can be used to accurately predict the change in Flanking-NISPL with source location. These data are used to explain why the effectiveness of floor toppings to control floor-flanking paths is a function of joist orientation. |
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| Publication date | 2005-08-01 |
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| In | |
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| Language | English |
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| Peer reviewed | No |
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| NRC number | NRCC 48143
NRC-IRC-17312 |
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| NPARC number | 20377857 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 71a4a43b-e14d-4ac1-9d74-4605b8582e3b |
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| Record created | 2012-07-24 |
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| Record modified | 2020-04-07 |
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