Methodology for analyzing perceptual criteria of urban soundscape

Abstract

The exposed study is part of a larger program which intends to constitute an urban soundscape simulator. This paper presents analyses of urban scenes with the aim of identifying parameters of sound perception for this future model. It seems that the perception of everyday urban sounds is not yet well understood by urban planning actors. However, those considerations are more and more problematic in everyday life and are becoming increasingly important for town planner recommendations. Therefore the assessment of perception indicators linked to acoustical measures is intended to help one fully understand urban acoustics phenomena. The method consisted of two simultaneous procedures on site. In order to calculate acoustical parameters, we recorded samples of soundscape that we analyzed afterwards. At the same time we observed perceptual attitudes and opinions using a semantic differential inquiry of passers-by. The locations were chosen in order to represent the main places of European city centers. Experimental results showed that five sector-related indicators could be defined. A full understanding of urban acoustical phenomena needs this multidisciplinary approach so that both physical and psychosociological parameters can be integrated in town planning.