超音波を含む音環境が人の心理・生理状態へ及ぼす影響

概要

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Increased attention has been given to the effects of sound environment not only acoustic but also ultrasonic, but their effects on the living organisms have not been fully elucidated yet. In this paper, we evaluated the healing effects of the sound environment including spectrum of ultrasonic region quantitatively using fluctuation of the brain wave as a numeric indicator for the degree of comforts. From the result of this experiment, we conclude that the increased feeling of comfort by being exposed to the ultrasonic sound is not caused by the direct effects of the sound to the human body, but lather by canceling the adaptation of the hearing senses to the sound of the gentle air flow with mild fluctuations (co-existing acoustic sounds in the environment) by making these fluctuations even softer.
2003-08-02