The purpose of this study is to develop a singing learning support system based on the visualization of acoustic features of learner's singing voice. We especially focus on a peak sharpness of singer's formant (Q-factor) and a second formant ratio (SFR) as skill development related acoustic features. In on our previous research, These two factors have tended to show the singer's skill level. In this paper, we propose a "Voice Ball" graph, which shows a relationship between the Q-factor and the SFR. By using our singing learning support system with the "Voice Ball" function in six weeks, our subjects are able to show the tendency of improvement of their singing skill.

Embodied meta-cognition, which is a cognitive effort to externalize what one's body feels by words and thereby to augment what one can feel and encourage attention to various variables, is said to serve as a means for learning emboided skills. We have made a hypothesis that a learning environment with dialogues with other people, each of whom has a daily custom of metacognition in order to learn embodied skill in each filed, may activate their metacognition and make their learning evolve. The four authors except the last have talked with one another regularly about what they had percieved and thought in their exploration of skills. In this paper, we present stories on how each assimilates variables from others, show the frequencies of exchanges of variables among the four, and discuss the implications of the results.

Life sounds can be a tool to create your life, by constructing new relations with the sounds you have been hearing or making. We call this creation "Sound Styling". In this research, we aim to establish the training framework of sound styling. We approach to the skills we need in using the sounds and will also explore the method to take the action in our lives.