Abstract
The sound insulation performance of building materials can be evaluated by transmission loss,which refers to the volume difference between the reverberation room and the adjoining room in which the sound was produced.At present,measurement of this value requires the use of special equipment and entails huge cost because it is measured on the basis of JIS,which requires the use of large amounts of actual sound insulation materials.If the results of the measurement value could be predicted,this could lead to reducing the development cost of sound insulation materials.Recently,some attempts have been made to predict this value by numerical analysis using FEM.However,the prediction using theoretical analysis has not yet been done.In this study,we analyzed the cuboid acoustic field for the purpose of prediction of transmission loss of sound.We used the analytical solution of a single dimension acoustic pipe.The validity of the analytical solution was verified by comparing the calculated results with the experimental measurements.
