This paper is about mapping strategies between gesture data and synthesis model parameters by means of perceptual spaces. The authors define three layers in the mapping chain: from gesture data to gesture perceptual space, from sound perceptual space to synthesis model parameters, and between the two perceptual spaces. To get a simple mapping between the gesture perceptual subspace and the sound perceptual subspace, they need to focus their attention on the two other mappings. We explain the mapping types: explicit/implicit, static/dynamic.