In the paper, the formal model of the noetic synthesis functions is presented. Together with the functions of noematic synthesis, they are understood as components of functions of intentional reference, which are meant to be, in turn, formalizations of intentional acts of reference performed in the stream of consciousness. This research perspective allows us to extend the category of speech acts to the category of all intentional acts of reference. The functions of noetic synthesis are understood as composed of the (...) function of noetic intention acting on qualia, noetic moods and noetic modes. The model allows us to explain the phenomenon of autism as having its source in disorders of the noetic synthesis functions. The constructed model is not intended as the faithful reconstruction of the Husserlian conception of noesis. Intuitions of the creator of phenomenology are treated as the only source of inspiration. (shrink)