Picture Book

3D presentation of an actual terrain with a berm. How does the noise propagate across the terrain.
Even for a relatively simple model the 3D solid model gives a better understanding of the situation than just the top view.
This Facade Noise Map depicts the classic view where a calculation on each facade is depicted.
In the 3D solid model many types of noise maps can be combined to visualize the situation.
The mouth of a road or railway tunnel must be treated as a vertical source collecting the noise from inside the tunnel. As the sound inside has very many reflections that each absorb a portion of the noise, the noise from the tunnel has a different frequency spectrum and a distinct directivity. The SoundPLAN tunnel object is reflecting these peculiarities.
The area around the Mercedes plant in Sindelfingen receives most of the noise from an adjacent autobahn.
3D presentations of noise contour maps are a useful tool even on a bigger scale like here for a rural area north of Bodensee (Lake Constance) in Germany
Elevation lines are helping with the understanding of a terrain, a 3D solid model representation is better, specially if the elevations are coded according to a color scale.
Buildings are filled with the scale-color of the loudest point on the facade to visualize the noise problem, a small insert shows the noise floor by floor in relationship with the noise on the ground.
SoundPLAN City
Noise Contour Map on top of a bitmap to depict the noise distribution inside the building and give the viewer a better understanding of the factory hall.
A residential neighborhood is sandwiched between a train line and a busy road, the noise contour map is depicting the situation. To get a better understanding, some extra geometry such as the property boundaries were added to the picture.
In this 3D image the imported signatures from a 2D plan are draped over the triangulated 3D surface to give the user the perfect understanding of the terrain.
A noise map depicting traffic for a new roundabout is inserted on top of the 3D map that is showing the position of bermes and road entry/exit ramps.
SoundPLAN is the program of choice for railway noise in Germany. All required train lines were modeled with the SoundPLAN 32 bit version. The output can be seen on the web.
The noise map of Backnang for road noise. Backnang is the host city of the SoundPLAN development office. On the right side a bigger map is shown indicating that this map is one "map tile" of many.
The noise map of Stuttgart for the Lden along with bitmaps depicting the communities. Stuttgart has around 600 000 inhabitants.
For some projects (here the city of Backnang) 2 sets of elevation spot heights are available, one depicting the terrain and the other one showing the raw information. The raw elevations are read in only within the circumference of the buildings and the height of the buildings are derived automatically and are assigned to the building.
The picture shows part of the import process for terrain data. The data points are very dense representing each one square meter so the import must filter this deluge of data to make the process manageable for a bigger area. The import can show absolute elevations in 3D or the deviation from the original data.
The higher the noise level the lower the rent that can be charged for apartments in the neighborhood. The loss of rental revenue can be translated easily into the cost of noise and depicted for an entire city.
Depicting the cost of noise for the city of Backnang. Only areas that are above a set threshold are included in the noise-cost analysis.
The Hot Spot Analysis correlates the noise levels with the number of inhabitants exposed tot he high noise levels. For each point in the Grid Noise Map the program finds how many people are living within a user defined circle. This way the magnitude of noise problems quickly can be depicted even for a big city.
Research has shown a correlation between noise levels and the percentage of people being annoyed or highly annoyed by the noise. Taking the population numbers and the level/annoyance ratio, SoundPLAN can depict how many people are annoyed on a city block by city block analysis.
With the auto-plot function SoundPLAN can generate an atlas of the entire city tile by time with the same noise scale and consistent colors, resolution etc. Here the city in Backnang.
SoundPLAN is a standards based programs, different standards have different tools to evaluate even the same situation. This picture shows a cross-section through a terrain, first calculated with the ISO 9613 and then the same situation calculated in accordance to the Nord 2000. The bottom depicts the differences in dB between the two standards.
For industry Noise SoundPLAN needs to use the sound power level Lw, when a user only has a noise measurement of the sound pressure level Lp available the data can be converted from one into the other, conversions are available for the half sphere, full sphere, half box and full box models.
SoundPLAN can model different forms of noise barriers. Define the degrees of tilt and for how many elements and you can create complex barriers.
A helicopter is taking off from a roof. Because of the location, the helicopter is backing out of the roof area before it flies away. The noise map is shown as a transparent noise map in order to also depict the buildings in the background.
A 3D view of a combination of a noise map with a bitmap indoors, the outer and inner walls are semi transparent to give the viewer an understanding of the noise transmitted from the shop to the office area.
A great presentation that citizen can understand is making your project succeed! Buildings are presented with the roof tops, the terrain is very recognizable, the shape of the noise barrier in 3D is convincing