Study the Sound Insulation of Elastically Restrained Panel

Abstract

Experimental determination of the acoustic characteristics of a sound insulation panel often requires a standard measurement suite consisting two rooms connected via a window onto which the panel is mounted. While such a facility is quite expensive to build and maintain, the measurement results can show a significant variance, especially at low frequencies. The potential causes may include the characteristics of the rooms, the placement of the sound source(s), the installment of the panels, etc. To better understand the variance of the results and identify the directions for improving the sound insulation designs and applications, a virtual testing capability is developed based on an analytical parametric model. This model consists of a source room, a receiving room, and a partition wall with a mounting window. The sound insulation structures can represent a simple panel or a complex structure with various structural and/or acoustical design features. This model can be effectively used to virtually test the acoustic performance of sound insulation designs under different environments and application conditions.