The following is a query from a colleague (Wes Grantham) I am working with on this project. Any suggestions to get us going in the right direction are greatly appreciated.
We are attempting to simulate or model the noise from multiple vehicles (say passing by a position on the street). This is in conjunction with our work with on how traffic noise contributes to overall noise pollution in various street situations (from busy intersections to residential neighborhoods).
We are starting by simply adding the intensities of single vehicles as they arrive at the measurement point, taking into account their distances and making an assumption about the attenuation per doubling of distance (a maximum of 6 dB would correspond to an anechoic background; presumably a normal street scene with reflecting objects would have a smaller attenuation per doubling of distance). We have thought about modeling the effects of a single building, and how the reflections from that building would affect the overall sound level. Also, we intend to model the occurrence of individual vehicles (perhaps using a poisson process?), and build into the model such parameters as number of lanes, average velocity of the vehicles, distance of the measurement point from the street, and average traffic density).
Does anyone have any references for work that have done this type of modeling? We have not ventured into this area before and want to make sure we're on the right track before going too far.