Abstract
Recently, the development of the system which is able to give the relaxation effect is strongly desired because modern persons feel a lot of stresses. The research of the system giving the relaxation effect for this problem has been also actively performed. Some researches estimate the relaxation degree to grasp a human mental condition objectively by measuring biosignals, and there are many forms giving the relaxation effect through musics and pictures.
In this research, we aim to construct the system to adjust the automatic operation to obtain the relaxation effect by presenting the sound to the user, and judging the degree of relaxation based on the brain wave information. In this paper, we report the result of sound generation experiment with this system and the questionnaire result obtained by subjects.