Abstract
This study aims at developing a violin playing robot that is able to produce expressive sounds. This will lead us to understanding human Kansei. In this paper, we describe a volume feedback system for an anthropomorphic violin playing robot with 7 D.O.F., which we have been developing. This system imitates the human procedure to improve their playing musical instruments, which is affected by human Kansei. We analyzed the relationship between bow speed and volume of the sound produced by the robot. Then, we constructed an algorithm for estimating bow speed needed to produce indicated volume sounds. We confirmed that the robot was able to produce sounds with indicated volume using the algorithm.