Environmental noise is today affecting everyone and is therefore one of the most important challenges to public health. Noise from roads and railroads, fly-over aircraft, industries and construction sites lead to increased stress and poor sleep. It is told that one single motorbike crossing Paris a warm summer night, wakes up about 250 000 people. Long exposure to high noise levels may also cause hearing damage as well as tinnitus.
A common mitigation measure is to build noise screens and barriers. We assess the performance of barriers with respect to sound reduction and absorption
and also measure according to
Noise mapping is a powerful tool to assess various measures, like sound barriers and limitations in vehicle speed to arrive at the most cost effective solution. The model is used to calculate sound levels where people are exposed, first at the present situation and second, after noise reduction measures. For airports, effects of altered landing and take off patterns can be assessed.
Together with our partner Akustix we can offer simulations for road and rail noise, commercial and leisure noise as well aircraft noise. Akustix has a long and proven experience using SoundPlan, also for airport noise modelling.
The starting point is 3-d GIS maps (via georeferenced bitmaps or data from DXF, ASCII and QSI) and relevant source models. Calculations can be made according to the Nordic Prediction models Nord2000Road (report 4653) and Nord2000Rail (report 4935). Airport noise calculations are typically made using SS ISO 9613 or Cnossos EU.