Local effects of noise mitigation measures would best be researched with high-fidelity tools. It may be preferred to actually listen to the audible results from such a tool, which is possible by applying noise synthesis. Noise synthesis, based on separate modeling of airframe and engine noise components, is described for a virtual community noise simulator. The merits of individual atmospheric propagation models are qualified. The propagation results on synthesized aircraft noise, following the implementation of two different models, are presented to qualify the importance of atmospheric propagation modeling. The effects on common flyover noise metrics for single events are minimal for this particular flyover case. This is due to the fact that at a short distance, which defines the level of the noise metric, the atmospheric propagation is well modeled by traditional straight paths.