In urban areas, city noises represent today a great problem. They are real nuisances for city-dwellers. Noises are caused by traffic, road works, factories, and also by people. So taking into account noises on urban planning should enhance the quality of life of everybody. More knowledge about urban noise could allow to compare different citywards, to reduce noise in noisy places or to simulate sound impacts of new urban developments. These can be only done by means of noise information and a Geographic Information System (GIS) of a city. The long-term goal (five years) is to design a special GIS devoted to urban soundscape representation, management and simulation. For this purpose a lot of other information is required concerning urban landscape, traffic, and human behaviors. Pieces of information are quantitative but also qualitative. Because of this complexity of the whole phenomenon we first focus on soundscape representation, integration and visualization and leave simulation aspects for the second phase of the project. One of the most important aspects concerns information. Urban sounds are spatio-temporal data. So, to better understand sound evolution, we worked with dated data and enhance temporal aspect in animated cartography. The aim of the paper is to present the general specifications of the system and the prototype of animated cartography.