It is considered that KANSEI is an important human characteristic, and it affects on human motion. However, the relationship between KANSEI and human motion have not been discussed. So, this study aims to clarify the effect of KANSEI on human motion. In this study, “KANSEI” is defined as follows: “KANSEI is one of human abilities to get, process and evaluate information, like sound and color, that consists of many parameters”. Violin playing is selected as an example of human motion strongly affected by KANSEI. This paper describs a model of planning of violin playing and the results of experiments based on the model.
The model is divided by two phases. One is task planning and the other is motion planning. In the work planning, notes information and KANSEI information are derived from music notes. Bow force, bow speed, sounding point and fingering are derived from them. In the motion planning, motion trajectory of the right and left arms and fingers is determined from the playing information. As a result, the sound is produced through playing a violin. From above consideration, it is assumed that KANSEI information affects the task planning mainly.
In the experiments, scales were played by three professional violinists to clarify the effects of KANSEI information. Eleven timbre describing terms like “bright”, “dark” in Japanese were given to them as KANSEI information. Bow speed, sounding point and fingering are measured by videotape, and bow force was measured by strain gauges attached to the bow.
From the analysis of the data, it is found that according to the change of KANSEI information, bow force and sounding point change, but bow speed does not change.