现场测量吸声系数方法概述

Review of the Measurement of Sound Absorption Coefficients in Situ

吸声系数测量是声学测量中一个重要方面。在实际应用中,主要采用驻波管和混响房间测量2种方法。这2种方法都需要专用的设备和实验环境、专业的测试人员在实验室中才能完成,步骤较为复杂。介绍了能够在现场测量吸声系数的3种方法,概括总结了各种方法的优缺点,为在声学材料和建筑声学领域的应用提供了指导。

The measurements of the sound absorption coefficients in situ are considerable interest in the field of acoustical measurement. Generally, there are two methods of measuring the sound absorption coefficients of materials by using the impedance tubes and the reverberation rooms, respectively. They are both laboratory based on measurement methods, which are not suitable for measurement to be made in situ. Three different methods for measurement in situ are introduced, the advantage and disadvantage of each method are summarized in this paper.