Noise simulation modeling is now feasible for assessing the noise impacts of airports since computational capabilities have increased. The current aviation noise models use integrated exposure assumptions to calculate the overall noise exposure. However, this assumption greatly restricts the ability to model the effects of terrain, barriers, weather, and aircraft directivity. Noise simulation models, such as NMSim, provide more accurate noise exposure calculations. Moreover, simulation modeling allows for the calculation of more noise metrics. Current models are limited to integrated type of metrics, DNL, NEF, SEL, etc. With simulated calculations, metrics such as Time Above and audibility, can be directly evaluated. Moreover, spectral content is maintained, so interior noise can be estimated. Examples of the improved calculations will be demonstrated.
展开▼
