Man has a different voice. This characteristic of the voice is like a fingerprint that distinguishes the
person. Because the characteristics of individuals such as physical structure and lifestyle are different, voices
are a characteristic that can distinguish individuals. These different voice characteristics are interested as a
means of biometric authentication. On the other hand, it would be hard to distinguish the voices which are
very similar among the family members. At this time, the genetic factors work the most role.
In this paper, using newly developed sound A color, we tried to compare voice with more intuitive
and simpler. The experiment was for 6 male and female voices by using voice frequency band of 0~4
KHz Sound A color and we have done a comparative analysis of the result. As a result of the experiment,
it was intuitively understood that even the visual expression of the sound A color is different by the
individual voice characteristics, and it can be seen that the sound A color also can be used as an index
for discriminating the individual voice characteristics.