This article aims to investigate experimentally the links between prosody and the various domains of linguistics (syntax, semantics, pragmatics). Since the function of prosody is to convey the interpretation of the meaning the speaker wants to give to his utterance, the method that is proposed is to define linguistic models that can be quantified in such a way as to both yield an interpretive strategy of the linguistic contents and to predict a melodic structuring of the lexical framework. Experimental evidence shows links between on the one hand constraints related to the text and the context, and on the other the distribution of models and melodical indices, and allows us to define prosody and more in particular melody, as a subjective locus, where whatever belongs to the linguistic realm enters the realm of pragmatics.