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Measurements of Scattering Coefficients Using the ISO Method in a Model Reverberation Chamber  

전진용 (한양대학교 건축공학부)
이성찬 (한양대학교 대학원 건축공학과)
류종관 (한양대학교 대학원 건축공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.22, no.3, 2003 , pp. 162-168 More about this Journal
Abstract
The degree of diffusion, characterized by the "scattering coefficient" of surface materials, has been known to be one of the most important factors in determining the acoustical qualities of concert halls. Based on the suggested ISO method, which measures the random-incidence scattering coefficient of surfaces in a diffuse field, the scattering coefficients of different sizes and densities of wooden hemispheres and cubes were measured in model-scale reverberation rooms. As a result, wooden hemispheres with a structural depth of more than 15㎝ have the highest average (500㎐∼4㎑) scattering coefficient. It was also found that the scattering coefficient becomes higher when the diffuser density reaches about 50% for hemispheres and 30% for cubes.
Keywords
Diffusion; Diffuse field; Scattering coefficient;
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