La cartographie des sonorités environnementales d'un territoire

Authors: Dhib, Ameni
Advisor: Viau, AlainHubert, Frédéric
Abstract: On a territory, sound sources emit sounds that can be of anthropophonic origins (i.e. vehicle noise), biophonic origins (i.e. sounds emitted by birds), as well as geophonic origins (i.e. wind noise). This makes it possible to describe a soundscape of the places while feeding particular needs specific to the mapping of the sound environment such as the acoustic properties of the territories, necessary to the understanding of the sound environment. Beyond the research work that studies and analyzes the acoustic properties of the environment, the state of the existing focuses on two types of sound cards: sound inventory cards and noise maps. Two methodological approaches are behind the production of these cards. The first is based on sound recordings measured and georeferenced on the territory using sound level meters, or applications installed on tablets/smartphones. The second is used to model the propagation of the acoustic wave in relation to the objects present on the territory (i.e. buildings, trees, etc.). Although this second approach considers the different environmental factors that can weaken the acoustic wave like atmospheric absorption (caused by wind, temperature, etc.), the geometric divergence and the nature of the cover of soil, it is found that it is poorly documented in the scientific literature, when no sound sensor is used to produce sound cards. The main objective is to define a generic method for modeling the acoustic propagation of a territory using multi-source geospatial data including very high resolution images. Thus, using geomatic tools, it is possible to represent the interaction that exists between the sound wave and the environmenta l objects that make up this territory. It is then possible from a sound source and sound receiving points to make so-called spatio-phonic cards
Document Type: Mémoire de maîtrise
Issue Date: 2019
Open Access Date: 7 May 2019
Grantor: Université Laval
Collection:Thèses et mémoires

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