Dynamic Game Soundtrack Generation in Response to a Continuously Varying Emotional Trajectory
Duncan A. H. Williams, Alexis Kirke, Joel A. Eaton, Eduardo Reck Miranda, Ian P. Daly, James Hallowell, Etienne Benoit Roesch, Faustina Hwang, Slawomir J. Nasuto · 2015
Dynamic soundtrack creation 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. 1