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scores, and constitute in a way their own analytical descriptions. In this paper we offered some ideas in the direction of a possible integration of classical music notation and visual computer techniques. Composers can experiment with these new workspaces trough the visual language OpenMusic. They help us to evaluate implementations and they offer at the same time some useful indications in the direction of possible future research.

Although our main goal is the computer assisted composition, the representation tools we described in this paper could be useful in other fields. For example, the concept of maquette, and more generally, the idea of a potential score, seems to be very appropriate in a musicological activity aiming at modeling musical pieces. Moreover, from a pedagogical perspective, objects like patches, scores and maquettes can be integrated in multimedia environments. This adds to the musical representation new possibilities of interaction.

OpenMusic source code is free available at www.ircam.fr/openmusic.

References

   AGON, A. (1998). OpenMusic : Un langage visuel pour la composition musicale assistee par ordinateur. Ph.D. Dissertation at Paris VI.

   BALABAN, M. and ELHADAD, M. (1999). On the Need for Visual Formalisms for Music Processing. Leonardo, 32(2):127-134.

   E. GAMMA, R. JOHNSON ET AL, R. HELM (1994). Design Patterns, Elements of Reusable Object-Oriented Software. Addison-Wesley.

   G. ASSAYAG, M. LAURSON ET AL, C. RUEDA (1999). Computer Assisted Composition at Ircam : PatchWork and OpenMusic. Computer Music Journal, 23(3).

   G. KICZALES, J. DES RIVIERES and BOBROW, D.G. (1991). The Art of the Metaobject Protocol. The MIT Press.

   STEELE, G. (1990). Common Lisp the Language, second edition. Digital Press.


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