平面波导管测试系统开发和验证

Development and verification of planar waveguide test system

本文主要研究波导管在高音压缩头声学性能测试上的应用。基于理论分析,计算得到不同尺寸波导管的简正频率;通过植入楔形吸音棉,消除波导管末端声反射并测试验证。对比不同测试系统及测试环境,证实自行搭建的平面波导管测试平台测试的准确度。另外,文章自行开发测试系统,可计算分析声压级、失真、声转换效率等,方便后续测试及结果分析。

This paper mainly studies the application of waveguide in acoustic performance test of treble compression head.Based on theoretical analysis,the normal frequencies of waveguides of different sizes are calculated. By inserting wedge-shaped sound-absorbing cotton,the acoustic reflection at the end of the waveguide is eliminated and tested and verified.Compare different test systems and test environments to verify the test accuracy of the self-built test platform. In addition,The test system developed by the author can calculate and analyze the sound pressure level,distortion,sound conversion efficiency,etc.,so as to facilitate the subsequent test and result analysis.