The mechanisms responsible for the transmission of sound in building elements such as floor/ceiling systems are complex and not all understood. An analytical model, based on modal decomposition of the displacements, forces and pressure fields, was developed for finite and non-periodical floor/ceiling systems to predict their low frequency response to impact excitations. The solution relies neither on the periodicity of the stiffened ceiling panels or suspension system nor on the infinite extend of the floor. Various parameters were considered to describe the interactions between the various coupled elements constituting the system. The author conducted a parametric analysis in parallel which combined with practical considerations aims at increasing the efficiency and user-friendliness of this model. This paper summarises the findings and presents some thoughts as to how prediction problems could be approached.
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