Interactive Scores

Carried out in collaboration with the SCRIME, this project aims to produce a model of a digital score enabling the performance of musical works through 'interaction points' inserted by the composer.

The scores are made up of temporal structures that can represent different musical objects such as synthesis processes, sounds, or interactive events that are set off by the performer. The composer also has the possibility of connecting these structures via temporal constraints based on Allen's logic to create a general coherence in the work therefore defining and limiting the space where the performer can choose to set off these events. Consequently, there are two successive phases. The first phase consists of the writing of the composition during which the composer defines the structures, connects them via temporal constraints, and places the interaction points. During the second phase the performer plays the work setting off interactive events while the system remains responsible for setting off static (non-interactive) events.

The objective of this project is to create a model for scores in the composition phase as well as a tool for publishing these scores, facilitating the definition of each element and preservation of the temporal constraints once published. Secondly, a performance system for these works must be put in place so that the performer can set off interactive events while preserving the temporal constraints.

This project makes it possible to explore several important techniques for computer music and compare their qualities: effective systems for the propagation of constraints, Petri nets, concurrent constraint programming. The OpenMusic software program will be used as a basis for experimentation, especially for publishing interactive scores via specially defined maquettes. At the same time, the SCRIME will be carrying out experiments with BOXES - a software program that offers a similar interface. Recent developments use real-time concurrent restraint techniques developed at LaBRI.

Partners: Scrime, LaBRI, Bordeaux-II University

Participants