Modeling and calculation of industrial, traffic, and aircraft noise at different scales.Calculation, assessment and presentation of air pollutant distribution.Fast calculations even for large projects due to multicore use and 64bit option.Calculation according to various national, international or user defined standards and guidelines including ISO 9613.This works for various source types in fields of road-, railway-, aircraft-, and industrial noise. It can be used efficiently at any scale, starting with a few single receivers in a neighborhood up to noise mapping projects of entire countries. CadnaA (Computer Aided Noise Abatement) is the leading software for calculation, presentation, assessment and prediction of environmental noise.