Noise analysis
Exterior noise
Because our plot is located in the centre of a large city (Rotterdam) we need to be able to cope with noise. First of all we need to calculate the exterior noise to which our building will be exposed to. For this we, in the urban analysis, analyzed a map of the "Atlas van de leefomgeving". In here we saw that there is a busy road (Heer Bokelweg) within reach of 100 meters of the plot. The noise level of this road was 70 decibel. To represent this road in our notebook, we have placed several noise points at the location of the street and gave them a noise base level of 70. Thereafter we calculated the Euclidean distance from the road to the plot. TO calculate the noise lattice we used a formula of the book Environmental Noise by ... Because a road is a line source we used this formula:
Lp = LW - 10 log10 (r) – 5 dB
Noise lattice
As you can see in this visualization we used source points for the noise, though in the explenation above we came to the conclusion that a road is a line source. We weren't able to convert the source points.csv into a line source file.
Pseudo code
Input: Final envelope (high res)
1. Import envelope lattice
2. Load noise source points
3. Creation of Noise field
Extract the coordinates of the centroids of the voxels
Set a noise base level for the noise points
Calculate the Euclidean distance between the centroids and the noise points
Compute the noise lattice with the noise base level and the Euclidean distance
Output: Noise field lattice