Surface diffusion coefficients for room acoustics: free-field measures
Hargreaves, T J, Cox, TJ, Lam, YW and D'Antonio, P 2000, 'Surface diffusion coefficients for room acoustics: free-field measures' , Journal of the Acoustical Society of America, 108 (4) , pp. 1710-1720.
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A surface diffusion coefficient is needed in room acoustics to enable the quality of diffusing surfaces to be evaluated. It may also facilitate more accurate geometric room acoustic models. This paper concentrates on diffusion coefficients derived from free-field polar responses. An extensive set of two- and three-dimensional measurements and predictions was used to test the worth of different diffusion coefficient definitions. The merits and problems associated with these types of coefficients are discussed, and past parameters reviewed. Two new coefficients are described. The new measure based on the autocorrelation function is forwarded as the best free-field coefficient. The strengths and weaknesses of the coefficient are defined. © 2000 Acoustical Society of America.
|Themes:||Subjects / Themes > Q Science > QC Physics > QC221-246 Acoustics - Sound|
Subjects outside of the University Themes
|Schools:||Colleges and Schools > College of Science & Technology|
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Acoustics Research Centre
|Journal or Publication Title:||Journal of the Acoustical Society of America|
|Depositing User:||TJ Cox|
|Date Deposited:||19 Apr 2011 09:31|
|Last Modified:||27 Sep 2011 12:31|
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