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Empirical Study on the Correlation of Random Incidence Sound Absorption Results from Varying Reverberation Room Sizes
Technical Paper
2007-01-2380
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Recent effort has focused on correlating random incidence absorption coefficients obtained in different sizes of reverberation rooms based on round robin testing of identical samples in a database driven approach. An alternate approach presented here is to correlate random incidence sound absorption coefficients among different reverberation rooms using an apparent linear relationship between sound absorption coefficients and a geometric property of the test samples. Linearity can be judged in relation to the uncertainty of each individual measurement. The study will encompass experimental work on three different sizes of reverberation rooms for both a single layer material and a multi-layered material. By examining the different sound absorption coefficient values from each size of room, as a function of geometric parameters, we illustrate the quantitative correlation that might be established between the different sizes reverberation rooms.
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Authors
Citation
Fung, K. and Edwards, R., "Empirical Study on the Correlation of Random Incidence Sound Absorption Results from Varying Reverberation Room Sizes," SAE Technical Paper 2007-01-2380, 2007, https://doi.org/10.4271/2007-01-2380.Also In
References
- Veen, J. Pian J. Saha P. “Development of a small reverberation room standardized test procedure for random incidence sound absorption testing” 2005-01-2284, SAE International 2005
- Chrisler, V.L. “Dependence of sound absorption upon the area and distribution of the absorbent material,” Journal of the National Bureau of Standards 13 169 187 1934
- Morse, P.M. Bolt R.H. “Sound waves in room,” Rev. Mod. Phys . 16 69 150 1944
- Daniel, E.D. “On the dependence of sound absorption coefficients on the area of the sound absorption material,” Journal of the Acoustical Society of America 35 4 571 573 1963
- Bartel, T. “Effect of absorber geometry on apparent sound absorption coefficients as measured in a reverberation chamber,” Journal of the Acoustical Society of America 69 4 1065 1074 1981
- Chappuis, A. “Small size devices for accurate acoustical measurements of materials and parts used in automobiles,” 931266, SAE 1993
- Edwards, R. Fung K. “Measurement uncertainty in random incidence sound absorption testing: part 1 formulation,” 2007-01-2227, SAE 2007