Empirical relations between acoustical p
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Wu Qunli
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Article
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1988
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Elsevier Science
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English
โ 280 KB
## A BS TRA C T Based on an analysis of a large amount of experimental data, the empirical relations between the characteristic impedance and propagation constant of porous plastic open-cell foams and the unit-depth flow resistivity are established. It is found that the correlation coefficients of a