Acoustical scale model study of the attenuation of sound by wide barriers

Abstract

Acoustical scale model experiments carried out with building-size barriers are described. The results of experiments conducted with the barrier in a free field and on a reflecting surface are presented. The free-field measurements are compared to several theoretical models and discrepancies between the theoretical and experimental results are discussed. Also presented is a simple expression which relates the excess attentuation obtained with the barrier situated on the ground to that of the same barrier in the free field. This expression predicts excess attenuations which agree quite closely with those actually measured in the scale model experiments.

Validation of a 1:8 Scale Measurement Stand for Testing Airborne Sound Insulation

“…Model research conducted in the context of noise analysis in the urban environment are mostly related to sound propagation in space [ 6 ], sound screening by partitions [ 7 , 8 ], and the impact of façade types on sound propagation in densely developed areas [ 9 , 10 ]. Their undisputed advantage is the fact that scaling of the urban infrastructure items allows acoustic measurements to be made under strictly controlled conditions, which is impossible at the full scale.…”