KU Leuven (Belgium) & Qsources analysed sound source suitability for in situ noise barrier measurements according to EN 1793-5:2016.
This method aims at optimizing the reliability of field measurements of reflection and scattering on barrier surfaces. Measurements took place at the Laboratory of Acoustics at the Department of Physics and Astronomy of KU Leuven.
Qoms2 (monopole omni-directional source) as well as Qohm (lightweight high output dodecahedron) were measured in comparison with a conventional sound source. During this study the direct sound arrival was analyzed using a microphone grid placed in a large reverberant room. Impulse responses where measured using different settings of the DSP controlled Qam measurement amplifier.
A preliminary analysis showed significant differences between the sound field characteristics of the Qsources devices and the ones of the conventional sound source, indicating a potential advantage of the Qoms2 source.
Other interesting tests such as measurements against surfaces with different absorption characteristics are planned in the near future.
Qsources would like to thank KU Leuven and Prof. Dr. Christ Glorieux for the cooperation.