A computer-implemented method for calculating real-time sound propagation values at locations within an area of interest, the method comprising: providing (S112), to a processing unit from a dynamic data feed, a sound propagation model with real-time information on one or more mobile emitters, for example vehicles, which are within an area of interest, providing (S114), to the processing unit from the dynamic data feed, the sound propagation model comprised in the processing unit with respective emission characteristics of the one or more mobile emitters, and providing (S116), to the processing unit from a database, the sound propagation model with information comprising influencing environmental factors on sound propagation for an environment within the area of interest; calculating (S120), by the processing unit, real-time sound propagation values at locations within the area of interest based on the sound propagation model; and visualizing (S140), by a user front end, the calculated real-time sound propagation values at the locations within the area of interest in two or three dimensions as a thematic map or sound propagation raster data set, wherein the information comprises first data and second data, wherein the first data is dynamic data and the second data is static data, wherein the dynamic data is assumed as changing over time, and wherein the static data is assumed as not changing over time, characterized in that the method further comprises the step of calculating (S150), by the processing unit, sound propagation levels which exceed a certain sound propagation level threshold, wherein a number of citizens affected by sound propagation levels higher than the sound propagation level threshold is estimated based on an overlap of areas having a sound propagation level higher than the certain sound propagation level threshold with areas having citizens, and wherein land cover data comprised in the second data provides information on citizens within the area of interest. providing (S112), to a processing unit from a dynamic data feed, a sound propagation model with real-time information on one or more mobile emitters, for example vehicles, which are within an area of interest, providing (S114), to the processing unit from the dynamic data feed, the sound propagation model comprised in the processing unit with respective emission characteristics of the one or more mobile emitters, and providing (S116), to the processing unit from a database, the sound propagation model with information comprising influencing environmental factors on sound propagation for an environment within the area of interest; calculating (S120), by the processing unit, real-time sound propagation values at locations within the area of interest based on the sound propagation model; and visualizing (S140), by a user front end, the calculated real-time sound propagation values at the locations within the area of interest in two or three dimensions as a thematic map or sound propagation raster data set, wherein the information comprises first data and second data, wherein the first data is dynamic data and the second data is static data, wherein the dynamic data is assumed as changing over time, and wherein the static data is assumed as not changing over time, characterized in that the method further comprises the step of calculating (S150), by the processing unit, sound propagation levels which exceed a certain sound propagation level threshold, wherein a number of citizens affected by sound propagation levels higher than the sound propagation level threshold is estimated based on an overlap of areas having a sound propagation level higher than the certain sound propagation level threshold with areas having citizens, and wherein <EOS>