An Evolutionary Approach to Computer-Aided Orchestration

  • Authors:

  • Grégoire Carpentier;Damien Tardieu;Gérard Assayag;Xavier Rodet;Emmanuel Saint-James

  • Affiliations:

  • IRCAM-CNRS, UMR-STMS 9912, 1 place Igor Stravinsky, F-75004 Paris, France;IRCAM-CNRS, UMR-STMS 9912, 1 place Igor Stravinsky, F-75004 Paris, France;IRCAM-CNRS, UMR-STMS 9912, 1 place Igor Stravinsky, F-75004 Paris, France;IRCAM-CNRS, UMR-STMS 9912, 1 place Igor Stravinsky, F-75004 Paris, France;LIP6-CNRS, 8 rue du Capitaine Scott, F-75015 Paris, France

  • Venue:
  • Proceedings of the 2007 EvoWorkshops 2007 on EvoCoMnet, EvoFIN, EvoIASP,EvoINTERACTION, EvoMUSART, EvoSTOC and EvoTransLog: Applications of Evolutionary Computing
  • Year:
  • 2009

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Abstract

In this paper we introduce an hybrid evolutionary algorithm for computer-aided orchestration. Our current approach to orchestration consists in replicating a target sound with a set of instruments sound samples. We show how the orchestration problem can be viewed as a multi-objective 0/1 knapsack problem, with additional constraints and a case-specific criteria formulation. Our search method hybridizes genetic search and local search, for both of which we define ad-hoc genetic and neighborhood operators. A simple modelling of sound combinations is used to create two new mutation operators for genetic search, while a preliminary clustering procedure allows for the computation of sound mixtures neighborhoods for the local search phase. We also show in which way user interaction might be introduced in the orchestration procedure itself, and how to lead the search according to the users choices.