Measurement, Simulation and Auralization of Indoor Road Traffic Noise (vor Ort)
* Presenting author
Building new houses in urban areas is often hindered by the presence of road traffic noise. Thereby, it is especially difficult to achieve sufficient façade sound insulation at low frequencies. Current regulations are mostly based on A-weighted levels and hence not only neglect low frequencies but also omit other factors that might influence the amount of disturbance such as time structure, traffic distance, proportion of heavy vehicles, driving speed and background noise. This motivates the need for experiments evaluating the human response to indoor traffic noise in a controlled virtual environment. Thereby, one challenge is to include the incidence angle dependent transfer paths through the façade in the auralization.The methods used in this paper utilize wave field synthesis in order to reproduce the sound field caused by moving sound sources on the outside window of a, specifically for this purpose designed, living room lab. A hybrid approach combining the head-related transfer functions from each outside loudspeaker through the window to an indoor listening position also allows a dynamic headphone based reproduction. Additionally, urban indoor soundscapes were recorded both binaurally and with different microphone arrays. This paper presents these methods and compares their outcomes regarding plausibility based on listening experiments.