抄録
As changes in timbre of reflected sounds due to the difference of material of the boundaries are experienced, the elastic vibration of the boundaries may affect the reflected field. Thus it is required to take into account the effects of the elastic vibration of the boundaries. In this paper, the reflected sound field from an elastic plate with infinite extent is analyzed theoretically. The effects of properties of the plate and the angle of incidence of sound wave on the reflection characteristic of an elastic plate are discussed.
