Planning Human-Computer Improvisation
Résumé
Improvisation intrinsically carries a dialectic between spontaneity/reactivity and long-term planning/organization. This paper transposes this dialectic to interactive human-computer improvisation where the computer has to interleave various generative processes. They require different levels of prior knowledge, and follow a coarser improvisation plan driven by real-time interactions with the musicians. We propose a time-aware extensible architecture allowing the temporal coordination of different improvisation strategies. It integrates various generative strategies capitalizing on the sys- tem Improtek into the high-level structure provided by the language associated to the score follower Antescofo. The resulting framework manages the musical events, the trig- gering of generative processes at different time scales and the declarative specification of improvisation plans driven by the occurrence of complex events.
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