摘要
本文结合实际工作经验，对在充水管道中利用传递函数法测量吸声材料的声学性能方法中存在的一些技术问题进行了深入的讨论，它们包括测量频率范围的确定、水听器的安装、两测量通道失配误差的修正、管壁的影响及数字信号处理等。文章最后给出了一个测量实例，测量结果的重复性良好。
Based on practical experience, we have discussed some technical problems in the method with which we can measure the sound-absorbed properties of materials in water- filled tube with transfer function method. The problems include the measurement frequency range、the fixation of the hydrophones 、modified error from the mismatch of the measurement channels、the in fluence of the tube wall、the digital sighals processing system and soon. Finally, showed a actual measurement example. The repeatability of the results is quite well.
出处
《声学技术》
CSCD
1993年第2期9-13,共5页
Technical Acoustics
