In this article was analyzed acoustic efficiency of two different construction noise barriers. Field measurements of noise tests were carried out before and behind a wooden barrier, which  height was 2.9 meters and a wooden wall  with equipped roof, which height was 3.2 m.
As is known the length of the wall,  height, surface roughness, shape and material of the wall - key aspects of determining the effectiveness of noise barrier. Different materials, depending on their characteristics of the hard or soft, porous or dense, interact differently with the sound of waves. Article contains research results of  noise measurements at  positive and negative air temperature. There analyzing wooden noise barrier acoustic efficiency at different temperatures and the effects of temperature to the diffraction of sound waves through the peak of the barrier.

DOI: https://doi.org/10.3846/enviro.2017.061