二つの理想化された騒音伝搬環境の混合モデルに基づく現実的道路交通騒音環境の等価伝搬特性推定に関する新たな一試み

概要

論文の詳細を見る
It is well-known that the level fluctuations appearing in the road traffic noise environment are brought on by various type causes and can be roughly classified into two great divisions on the road traffic flow pattern and the surrounding sound field. Accordingly, if the equivalent models for the above two divisions-traffic flow and its surrounding field are well established in a flexible form of reflecting the complex situation of actual road traffic noise field, it will be possible to predict precisely and/or to control effectively the road traffic noise. In this paper, from the above point of view, a stochastic model of road traffic noise with a generalized Poisson type flow is first introduced with many informations of actual situation. Next, an equivalent type sound propagation model is newly proposed in a form of mixing of two idealized sound propagation environments-a free sound field and a diffused sound field. Furthermore, a methodological trial to estimate the above equivalent sound propagation characteristics of the compound environment by measuring the actual road traffic noise data is derived from the system-theoretical point of view. In this case of estimation, the well-known stochastic approximation method is used in order to overcome the difficulty of non-Gaussian and non-linear characteristics existing in the actual environmental noise phenomena. Finally, the legitimacy of this estimation method is confirmed by applying it to the traffic noise data actually observed in a big city.
社団法人日本音響学会の論文

二つの理想化された騒音伝搬環境の混合モデルに基づく現実的道路交通騒音環境の等価伝搬特性推定に関する新たな一試み

スポンサーリンク

概要

著者

関連論文

スポンサーリンク