| 摘要 |
The invention relates to a diffractor for diffracting sound of traffic on a travel surface, the diffractor comprising at least one diffraction plate to be disposed laterally beside the travel surface, wherein the diffraction plate is provided with a pattern of recesses in the upper surface thereof for the purpose of diffracting the traffic noise in a direction which differs from the lateral direction, wherein each of the recesses is divided into individual resonators by intermediate walls provided in the recesses, wherein the recesses have acoustically substantially non-absorbing walls and are free of acoustically absorbing material, and wherein the intermediate walls between adjacent resonators comprise at least one throughflow opening along which the rainwater can flow from the one resonator to the other. |
