Dynamic game soundtrack generation in response to a continously varying emotional trajectory
Williams, D., Kirke, A., Eaton, J., Miranda, E., Daly, I., Hallowell, J., Roesch, E., Hwang, F. and Nasuto, S. (2015) Dynamic game soundtrack generation in response to a continously varying emotional trajectory. In: 56th International Conference: Audio for Games, 11-13 Feb 2015, London, England.
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Dynamic soundtracking presents various practical and aesthetic challenges to composers working with games. This paper presents an implementation of a system addressing some of these challenges with an affectively-driven music generation algorithm based on a second order Markov-model. The system can respond in real-time to emotional trajectories derived from 2-dimensions of affect on the circumplex model (arousal and valence), which are mapped to five musical parameters. A transition matrix is employed to vary the generated output in continuous response to the affective state intended by the gameplay.