Localization and identification of moving noise sources

Significant portions of environmental noise are caused by moving vehicles. Some of this noise is only generated during the movement itself. The acoustic contribution of these sound sources can therefore only be determined while the vehicle is in motion. The main problem that arises from this is the short time in which the sound caused by the vehicle can be determined when using a stationary microphone array for localization. In addition, the movement also causes the so-called Doppler effect, that is a shift in the frequencies or pitch. It is therefore much more difficult to localize and determine the contributions of various physical effects during movement. In the predecessor project LION, a method was developed that takes the spectral effects of the motion not only approximately into account, as is commonly the case in previous approaches. Furthermore, reflections from surrounding structures can also be considered by using the boundary element method in 2.5 dimensions. In the follow-up project LION 2, this approach is to be improved and extended to more realistic broadband and stochastic sound sources.