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• W2109597532 abstract "The modal expansion method has been used to formulate expressions for real and imaginary parts of the complex sound intensity inside enclosures. Based on theoretical results, the computer program has been developed to simulate the acoustic intensity vector field inside the irregular room whose shape resembles the capital letter L. Calculation results have shown that a low-frequency distribution of the acoustic intensity is strongly influenced by the modal localization and the characteristic objects in the active intensity field are energy vortices and saddle points positioned irregularly inside the room. It was found that for small sound damping the vortex centers lie exactly on the lines corresponding to zeros of the eigenfunction for a dominant mode. An increase in a sound attenuation results in the change of vortex positions and can cause the formation of new vortices. Finally, an influence of the wall impedance on the quantitative relation between the acoustic and reactive intensities was studied and it was concluded that for very small sound damping the behavior of the sound intensity is basically only oscillatory." @default.
• W2109597532 created "2016-06-24" @default.
• W2109597532 creator A5056753242 @default.
• W2109597532 date "2013-05-01" @default.
• W2109597532 modified "2023-09-23" @default.
• W2109597532 title "Analytical and numerical study of acoustic intensity field in irregularly shaped room" @default.
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• W2109597532 doi "https://doi.org/10.1016/j.apacoust.2012.11.009" @default.
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