The study on the effect of active control with music noisy hospital environment.

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I investigated that I could improve environment of hospital using music. I derived two results. Favorite music and the sound of the high frequency band music may palliate subject pain. Furthermore, the music of those types may inhibit sympathetic nervous activity. Future works are the following contents. We investigate an effect about the selective attention behavior to induce by hearing music and examine a method to clear the noise in the hospital by an active control effect.