| 摘要 |
PROBLEM TO BE SOLVED: To provide a creature exclusion device for applying a voice superposed on an ultrasonic wave and means other than a voice to a creature to be excluded.SOLUTION: A creature exclusion device 1A radiates the voice, in which a fundamental sound of an exclusion object creature and a false sound using the characteristic acoustic property of a fundamental sound are superposed on an ultrasonic signal, as a sound pressure level equal to or higher than the sound pressure level of the sound emitted by the exclusion object creature, and emits a light to the exclusion object creature. |
