The assessment of environmental noise in urban areas is challenged by the issue of effectively modelling complex noise propagation behaviors among buildings. As one of the solutions, the ASJ RTN-Model (originated from the works by Fujimoto et al.) proposes an effective calculation method for road traffic noise propagation behind buildings without heavy computational burden. Here, we report the recent attempts on extending the prediction model to support various configurations of the noise source. Specifically, an adjusted model is developed that supports various frequency characteristics as well as higher positions of the noise source. The adjusted model does not significantly change the original structure and only modifies the determination methods of parameters within the prediction model. The study is based on measurement data from a series of scale model experiments, and the performance of the adjusted model is examined by comparing the predicted results to the measured results.
Wang et al. (Wed,) studied this question.