Road Noise Tool
The Road Noise Tool replicates noise emitted from nearby or on-site roads. It is drawn as a polyline and does not create physical geometry. Instead, it informs the optimization algorithm to minimize façade length exposed to high noise levels using ray-tracing.
Configurable Settings:
- dBA Threshold: The A-weighted decibel limit measured at the outer face of the façade, filtered to match human hearing sensitivity.
- Traffic Volume (Vehicles/day): The average daily automotive traffic over a yearly cycle.
- Speed Limit (km/h): The maximum allowed speed on the segment.
- Hard Surfaces (%): The percentage of acoustically reflective surfaces (concrete, asphalt, etc.) between the road and the façade.
Note: Distance propagation is calculated using a simplified model based on Boverket’s standards.
