Separation of Resonant and Non-Resonant Components—Part II: Surface Velocity

Abstract

In this second paper, the separation of the resonant and non-resonant components of the mean square velocity of lightweight building elements is investigated for use with EN12354. Two methods for separating the components are presented. The first involves measuring the mean square velocity of a series of panels, each with a different amount of damping. A modified least squares approach is then used. The second method uses the velocity level difference between building elements measured according to EN10848 and the measurement of the mean square velocity of the elements due to excitation by an airborne noise source. This offers advantages since it adds a few additional steps to the measurements for EN10848. However this method was not successful over the entire frequency range when applied to the elements used in this study.