People generally communicate using voices. Not only the thoughts you have when communicating, but
also the contents other than objective information such as feelings, feelings, and situations are transmitted.
If objective communication is the main function of communication using voices, information can also be
conveyed through the facial expressions during speaking, as an additional function, emotions, health, stress,
confidence, and speaking. Analyzing this voice, we can analyze about 100 kinds of information and information such as fundamental frequency distribution, energy change with time, resonance frequency
(formant), speed to speak can be obtained. In addition to these linguistic changes in people and situations,
various changes and features appear in the voices, including the emotional and psychological state of the
speaker. In this study, one presidential candidate confirmed the change of speech voice, and analyzed voice
and cognitive characteristics. And the results of the analysis are analyzed by the convergence analysis. In
the presidential candidate speech, it was confirmed how the perceptions change according to various voice
characteristics of candidates, and how the analysis result according to the change can change.