Enhancing noise assessment accuracy: FEM as an advanced complement to CNOSSOS-EU

This study explores the enhancement of noise assessment accuracy by integrating the Finite Element Method (FEM) as a complementary approach to the Common Noise Assessment Methods in Europe (CNOSSOS-EU). CNOSSOS-EU, widely adopted as the reference for strategic noise mapping across Europe and beyond, provides an semi-empirical model for noise propagation based on experimental algorithms and simplifications. While robust, CNOSSOS-EU’s approach can overlook the complex physical and geometric characteristics of certain environments, particularly in detailed or high-stakes noise assessments. To address these limitations, this work demonstrates how FEM—rooted in fundamental physical principles—can serve as a powerful adjunct to CNOSSOS-EU, offering finer detail in modeling noise propagation in complex environments. By comparing and validating FEM-derived results against those of CNOSSOS-EU, this study identifies key discrepancies and analyzes their implications for noise management strategies. The findings underscore the added value of integrating FEM, ultimately supporting more informed decision-making and the development of effective noise control measures.