Empirical Formulas of Sound Absorption Coefficients and Spectrums of
EmpiricalFormulasofSoundAbsorptionCoefficientsandSpectrumsof,张新安,,Anewtheoryisputforwardthatthesoundabsorptionprincipleofperforatedpanelissimilartoimperforatedplate.Soundisabsorbedbythevibrationofpanel,whilenotthehol