1 VALIDATION OF AN OUTDOOR SOUND PROPAGATION MODEL IN PRESENCE OF TREES PACS Reference 43.28.EN

Following our research line, where we try to validate an outdoor sound propagation model, Nord 2000 [2], we include in this paper new experimental results obtained in different woods, with different trees ’ density and different trunk diameters. This model considers, among other things, the effect of ground, the atmospheric absorption and two different effects associated to the presence of trees: scattering and screening. We have already compared the model to the experimental results obtained for poplar woods [1] and in this work we intend to validate the model for other species. We have performed measurements in five more woods with completely different characteristics. Some are natural oaks and pine woods and the rest correspond to farming woods from our region, the Castilla and León Autonomous Community, in Spain