Abstract
In this research, we propose a measurement method for the effec t of human relaxation to construct the relaxation sound generation system. At first we perform the electroencephalogram measurement and extract a specific frequency band (θ, α, and β wave) concerning with the human awakening state and catch a tendency of the relaxation by analyzing each content ratio. In addition, we estimate the relaxation degree of the subject in the state hearing sound generated by Interactive Chaotic Amusement System (ICAS) developed in this laboratory to confirm the efficiency of the proposed method. ICAS is the sound generation system to decide the musical note, duration and volume using network of chaotic elements which is able to control synchronousness, and users can generate free sounds by ICAS. As for the result of experiment, we confirmed that the result of the questionnaire evaluation obtained when the sound of ICAS was presented to the subject and the result of the relaxation degree by the proposed method show the same tendency.
