DEUFRABASE : A German-French acoustic database on road pavements
Résumé
In the framework of a DEUFRAKO (German/French cooperation) project on the Prediction and Propagation of Rolling Noise (PR2RN), it has been proposed to rank the different German and French road pavements with respect to noise for different long distance configurations representative of real road topographies, ground characteristics and meteorological situations. After identifications of those typical 30 configurations, the attenations between a reference point in the near field and several receiving points in the far fields have been computed according to the most relevant and adapted modelling methods currently available. The main goal being the accuracy of the prediction and not the computation time, analytical (ray tracing) and numerical (BEM, Parabolic equation) approaches have been implemented. In the following a technique permitting to estimate day and night LA eq and Lden has been used to classify the various pavements for the whole configurations. All those results have been gathered in a common database DEUFRABASE which will be directly available on the website of the author's Institutes. The paper deals with the description of the ranking procedures, how the database is implemented on the web and how to use it for road traffic noise prediction.