Noise contour lines go zig-zag over barrier/road

When Novapoint Noise calculates noise contour lines, it uses only the available, calculated points. There is no logic to “adjust” such contour lines when they cross a barrier, road ot other object. The interpolation of values between the points is strictly linear.

This can lead to the noise contour lines zig-zagging over a noise barrier or road. Se the following picture for an example:

Though mathematically correct, this does not look very nice! To reduce this problem, try to align the point grid alongside the barrier/road (with “choose angle” in the grid dialog box), as in the following example:

This will reduce the number of calculation points required to get good noise contour lines alongside a barrier.