Consortium only

WP2

Relationship near-field / far field for sound reflection

The main objectives of  WP 2 are:

to develop a numerical simulation method that can translate the results of the in situ sound absorption measurements in the near field of an NRD to the effect of sound reflections against the NRD on the traffic noise impact at a larger distance from the barrier;
to validate the numerical simulation method against measured data acquired in near and far field;
to develop an (analytical) engineering computation method that gives approximately the same results as the above mentioned numerical simulation method, but will be easier to handle and can execute the computations much faster;
to validate the engineering method against the results of the numerical simulation method and the available measurement data;
to define an appropriate performance indicator for the rating of the sound absorbing performance of a noise barrier based on the far field effect.



o to validate the numerical simulation method against measured data acquired in near and far field