Motion analysis for emotional performance of snare drums using a Motion Averaging Method
Masanobu Miura, Yuki Mito, Hiroshi Kawakami · The Journal of the Acoustical Society of America · 2012
Proposed here is a “Motion Averaging Method”, for the analysis of motion data of musical performance on expressing emotion obtained by a motion capture system. The method is made to analyze the motion on expressing any emotion on playing the snare drum. Specifically, the motions for an etude with each of emotion (tenderness/happiness/anger/fear/sadness) played by three trained percussionists were recorded by using a motion capture system. Obtained data (*.trc) were corrected and then adjusted among them by shifting and rotating player's position, so as to ignore the difference of position of players on recording. Moreover, the difference among each performance in time is uniformed by stretching (expanding or contracting) the motion data based on the impact time of the performance. Expanded or contracted data were then averaged for each emotion. Obtained motion is called an “averaged motion”, which shows common motion of the performance on expressing each of an emotion. Features of the averaged motions for each emotion are measured by observing differences and tendencies among each player were investigated. This study shows a list of features of motion on playing the snare drum by three trained players. We also discuss about the application of the method.