DECREASE IN THE REFLECTION COEFFICIENT OF A SOUND WAVE FROM A LAYERED MEDIUM DURING NORMAL INCIDENCE
In the article, the possibility of decreasing the reflection coefficient of a sound pressure wave incident normally on the surface of a layered medium is investigated. To reduce the reflection coefficient of the sound wave, the method of introducing additional layers with the parameters density and speed of sound, which provide a smooth transition from one medium to another with minimal loss of energy for propagation, was chosen. As the investigated model of such a medium, the structure “carbon steel-metallurgical slag” is used, divided into three and ten layers with transition parameters that vary linearly. In the article, the dependences of the reflection coefficient on the circular frequency are constructed for two options for introducing the number of transition layers: three and ten. It is shown that with an increase in the number of transition layers between the media, the sound reflection coefficient decreases.
Authors: A. V. Vagin, A. M. Inyukina
Keywords: Reflection coefficient, normal fall, inclined fall, layered medium, transition layer, medium density, sound speed
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