SOUNDMAPPING APPROACHES IN A SMALL SUBURBAN STUDY AREA

摘要

There is sufficient scientific evidence that noise exposure can induce severe non-auditory health effects such as hypertension, ischemic heart disease and stroke, besides annoyance, sleep disturbance and cognitive impairments. Currently, epidemiological studies use the A-weighted sound pressure level, because it is relatively easy to model larger areas, but human perception of noise exposure from the variety of traffic sources is not always well represented by this approach. On the other hand, the general use of psychoacoustic indicators is currently hampered by its lack of modeling larger areas. Therefore, further research in the field of the spatial distribution of psychoacoustic parameters is required to introduce indicators, closer related to the human perception of sound, available for epidemiologic studies. A first step into this direction is done within the project RA~2MSES in Austria for rail noise. In a pilot study in Southern-Austria a small area analysis of the spatial distribution of the psychoacoustic indicator loudness is conducted and the findings are compared with the results obtained with sound pressure level (SPL). Different models were fitted to the measured data of various locations in the study area and sound maps created for all indicators. In a first step the result based on the psychoacoustic parameter loudness were presented.