Human hearing awakens the first of human senses and sleeps the latest. Hearing is sensitive to one's organs and is easily susceptible to noise. A person is exposed to noise from birth to death. Especially, in the case of automobile sound, it is frequently encountered in everyday life, and when a person who passes by without recognizing the sound is heard, the sound is heard higher than the general noise and is classified as a sound more unheard than other noise. In this paper, we analyze the car sound from inside and outside. Experimental results showed that the external noise was heard more loudly than the noise inside the automobile, and the energy was distributed at low frequencies. In the low frequency band, the duration of the sound was long, unlike the high frequency band. In addition, when two male adults were told and the EEG was measured, it was analyzed that they felt psychological stress and anxiety. In the future, we hope to see how noise from automobile acorns causes stress and anxiety in people, and reduce noise in everyday life to make healthy social activities.