Abstract
The transfer function and the impulse response of an acoustical barrier in front of a large building facade were calculated. The sound field prediction around the barrier was based on the Kirchhoff-Rubinowicz theory, where the velocity potential on the back of a barrier was treated as zero, and then its inverse Fourier transform was calculated as the impulse response. Multiple reflections, in the back of a barrier, the building facade and the ground, were calculated only for specular reflections of diffracted waves which were born at the edges of the barrier. For damping of these multiple reflections, absorbingmaterial was lined on the back of the barrier and the ground. These calculation methods were compared with the scale model experiments in the time domain giving good agreements. The diffraction in the back of a barrier became more intuitive being expressedin the time domain.
