This paper discusses that the impressions of three pieces of sounds based on Visual Analog Scale (VAS). The results show that subjective evaluation values based on the impression (ex. “happy”, “sad”, “bright”, “dark”, and so on) of three test pieces have been obtained and visualized by a combination of boxand-whisker plot and univariate scatter plot. In addition, it has been discovered that the difference of the impression by the different sounds can be expressed. Moreover, it has also discovered that the questions based on the similar impression belong to the same cluster.
