BEM Simulation of noise barrier in-situ reflection measurements

The Adrienne method (CEN/TS 1793-5 [2]) is a test method to determine the in-situ acoustic performance of noise barriers for sound re ection and sound insulation. In this work as part of my dissertation the test method for sound re ection was simulated with the 3D Boundary Element Method. The open source software Acousto was used for the simulations. From the results in the frequency domain, time domain impulse responses were calculated. The impulse responses were then analysed according to the Adrienne method, which means, the propagation corrected energy content of the re ected peak was compared to the free eld impulse response to calculate the sound re ection index RI.