中文摘要：

传统的吸声系数测量方法主要有驻波管法和混响室法，而驻波管法和混响室法都存在着一些缺陷．基于此，根据吸声材料的表面特性阻抗是吸声材料吸声系数的一个重要参数的原理，提出了一种新的测量吸声材料吸声系数的方法．运用此方法对某一吸声材料进行了实验，并将实验结果与驻波管法以及混响室法测得的结果进行了对比，结果表明该方法在低频时，测得吸声系数与其他2种方法基本相同，在高频时，有一定误差．

英文摘要：

Traditional methods to measure absorption coefficient are standing wave tube and reverberation which have some shortcomings. In this paper, according to the principle that the surface characteristic impedance of the absorption material determines the absorption coefficient, a new method to measure the absorption coefficient is introduced. At last, an experiment for one absorption material is carried out, the experiment results compare with the results of the other methods above mentioned, the result denotes that the theory is correct and practicable.