The experiment employed 11 healthy subjects. Heart Rate Variability (HRV)s of the subjects when they listen to the 1/f fluctuation sounds, and when they do not, are recorded separately. Furthermore, in order to investigate the psychological state change, the subjects are required to answer Visual Analog Scale (VAS) questionnaire for listening to the 1/f sounds. When the subjects listen to the 1/f fluctuation sounds, their LF/HF values are increased. And the experiment result shows that there exists relationship between VAS data (”Like or Dislike”) and HRV data. Therefore, the proposed method is very useful.
