sonX
sonX is a sophisticated sound propagation model developed at Empa.
Primary features are:
- Ground effect calculation based on an analytical solution for spherical waves, which was extended for finite segment length and variable ground properties
- Ray tracing algorithm to take meteorological effects into account. Additional to changes on shielding effects also levels in acoustical shadow zones are predicted
- Reflection models for rigid surfaces that differentiate between coherent reflections (mirror-reflections) and scattering. The solution for the coherent part is based on the Kirchhoff-Helmholtz-Integral, the model for diffuse reflections follows the principal of exchange
- Models for diffuse reflections on forest edges and cliffs
![https://www.empa.ch/documents/56129/103151/SaT_sonX_Grafik.jpg/f2e4a3f8-b31e-45bf-ad00-5bf647c5a60b?t=1448459015000&doAsUserId=mLYofz1ofIc4z2qdMCjTcg%3D%3D%3F_NewsPortlet_categoryId%3D56982](https://www.empa.ch/documents/56129/103151/SaT_sonX_Grafik.jpg/f2e4a3f8-b31e-45bf-ad00-5bf647c5a60b?t=1448459015000&doAsUserId=mLYofz1ofIc4z2qdMCjTcg%3D%3D%3F_NewsPortlet_categoryId%3D56982)
Resulting sound rays for different weather conditions
Further Documents
Dokumentation des sonX-Ausbreitungsmodells, Stand 2022 (PDF, Deutsch)
sonX-Validierung, Stand 2013 (PDF, Deutsch)
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