Further considerations on theoretical applications on the sound power substitution method

* Presenting author
Day / Time: 20.03.2019, 10:40-11:00
Room: Saal 6
Typ: Regulärer Vortrag
Abstract: The characterization of sound sources is based on their emission and is quantified by sound power. In broadband analysis the sound power frequency range is limited to frequencies between 50 Hz and 20 kHz, at most. The traceability for the sound power in free-field conditions is suggested as the tool to extend the usable frequency range in sound power measurements. A previous study presented the influential factors of the theoretical implementation of the substitution method, which is a key component for traceability. Further analysis is discussed in the present study. After optimizing the computational needs for the calculations, the substitution method was applied to various configurations. Different source orders were taken into consideration. The sources were positioned in different geometries of different impedances and the substitution was performed in order to project realistic sound power measurements.