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首页> 外文期刊>Georgian Electronic Scientific Journals: Physics >INVESTIGATION OF SOUND ABSORPTION COEFFICIENT BY DECAY OF STANDING WAVES IN THE IMPEDANCE TUBE
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INVESTIGATION OF SOUND ABSORPTION COEFFICIENT BY DECAY OF STANDING WAVES IN THE IMPEDANCE TUBE

机译：用阻抗管中的驻波衰减来研究吸声系数

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摘要

Determination of absorption coefficient in materials, in a condition of wide consumption, is a very difficult problem and in majority cases may be said it is impossible because of requirements of special laboratory, apparatuses and measured devices. Moreover, by the existing methods, the accuracy of measured coefficient depends on a method of measuring and fixing of a sample. The wide spreading of modern digital technique and software give the ability that the material acoustical features, in particular the sound absorption coefficient were determined in a wide consumption. According to the presented method, the sound absorption coefficient is measured directly i.e. by the relation of reflected and incident waves but not by bypass ways as it is done in the present, so the presented method ensures more exactness and stability of measuring.
机译：在广泛消耗的情况下，确定材料中的吸收系数是一个非常困难的问题，在大多数情况下，由于特殊实验室，设备和被测设备的要求，这可能说是不可能的。而且，通过现有方法，测量系数的精度取决于样品的测量和固定方法。现代数字技术和软件的广泛普及使人们能够以广泛的消耗量确定材料的声学特性，尤其是吸声系数。根据所提出的方法，吸声系数是直接测量的，即通过反射波与入射波的关系而不是通过目前的旁路方法来测量，因此，所提出的方法确保了测量的准确性和稳定性。

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