Offline Sound Volume Feedback Algorithm for a Violin-Playing Robot

Abstract

This paper proposes an offline sound volume feedback algorithm for a violin-playing robot and shows the validity of the algorithm. We built a 7 D.O.F. violin-playing robot and investigated the relationship between bow speed and sound volume. We found from experiments that the sound volume can be approximated by a third-order polynomial of the bow speed. Based on this relationship, we proposed an algorithm for sound volume feedback. We implemented the proposed algorithm onto the robot to clarify its effects. The result confirmed the validity of the proposed algorithm.