The majority of composers and scholars in the field of electroacoustic and computer music address their attention to the problem of achieving satisfactory relationships between new technological instrumentalities and the very sense of music making. Reflections concerning the relationships between the use of digital technologies and musical expression have assumed an increasingly important role, since they provide interpretative codes of composers' works and assume an explanatory function during the presentation of new musical pieces. Focusing on the interaction between cognitive environments, emotive dimensions and communicative set-up, this paper intends to propose an analysis of some theoretical statements, which regard the relationships between scientific innovations and the evolutionary tendencies of technologically based music.