Modelling of outdoor sound propagation is an important part of control noise calculations in relation to regulations and area development plans.
Generally, the sound propagation is dependent on topography, soil characteristics, vegetation and meteorology. We have participated in the development of the nordic propagation model Nord2000, which is a first attempt to model various propagation effects. The work is continued in the EU project Harmonoise. During validation of this model, detailed reference models are used. There are great challenges with regard to refinements.
Further development is focused on propagation of low frequency sound (and vibration) which is important for many noise sources. The established basis is used in Norwegian tools for noise survey and prediction.
Svein Ådne Storeheier, phone: +47 92252953, e-mail: Beskyttet adresse