ENVIRONMENTAL NOISE MEASUREMENTS AND MODELLING

Environmental noise measurements and propagation calculations (noise modelling) are an integral part of land-use planning, environmental impact assessment, construction, or environmental permits. A noise study maps the current or future noise levels and compares the results to noise guideline values. The study may include assessment, dimensioning, or design of noise control measures.

Measurements

Noise measurements are usually carried out either at a receiver location exposed to noise or near the noise source to determine the noise emission. Our measurement services include:

• Noise level measurement at a receiver location indoors or outdoors
• Noise emission measurements
• Sound power level measurements

Noise Propagation Modelling

Noise propagation into the environment is calculated using the CadnaA calculation software, which meets the requirements set for environmental noise modelling. Modelling services are offered for the following noise types at different stages of land-use planning and construction:

• Road traffic noise
• Wind farm noise
• Noise from aggregate production plants
• Industrial plant noise

Noise Control Design

By using noise models, the effect of different noise control options can be calculated. This enables comparison of various solutions and facilitates finding a cost-effective alternative.

Facade Sound Insulation

The most effective method of noise control in a noisy area is managing facade sound insulation. The facade sound insulation requirement is regulated by a Government Decree. We offer services as follows:

• Facade sound insulation measurements
• Dimensioning calculations for facade structures complying with the Government Decree
• Product development and laboratory testing of facade structures such as walls and windows

Figure 1. Example of an environmental noise daytime L_Aeq07-22 sound level map.