An optimal dimensioning method of a green wall structure for noise pollution reduction

This paper concern the optimization of a multilayered green wall structure including substrate and foliage in order to reduce as much possible backward noise reflection forward transmission from wall. Each component involved is fully characterized experimentally get its transfer matrix. Simulation demonstrated that layer superimposed doesn't affect losses but contributes greatly increase return structure. To achieve best performances terms well frequency bandwidth, methods are discussed selection types materials, thicknesses, arrangement layers parameters.