Dear members of the group:
first of all, I would like to thank all members for their participation and for solving some of the problems previously raised and which have been of great help to me.
I work with ArcGis 10.5 and SMT v 4.0 (later versions generate different problems: error messages or illogical results).
I explain you my project and my problem. I am making acoustic calculations from rock shelters with rock art to evaluate the possible use of these sites during Prehistory. These are shelters located under rock walls at high locations, usually on steep slopes. The problem arises when the SPreAD-GIS results do not provide results for the closest areas, i.e. for the steepest slopes in the immediate vicinity (50-150 m). Obviously, the sonority in these areas is good (we have checked this empirically). I don't know if it's a problem with the DEM or the land cover dataset (both with 5 m resolutions) or if I'm configuring something incorrectly.
I hope you can advise or help me.
Regards
Gabriel