The experiment results were in agreement with the results of the theoretical analysis. The method has proved that microphone sensitivity calibrated by pistonphone can be used for the microphones intended for high intensity sound ( below 170dB). 实验结果和理论分析相符,证实了用活塞发生器校准得到的传声器灵敏度值,来校准高声强(声压级在170dB以下)是可行的,这对高声强测试工作提供了方便。
The working principle of pistonphone and the measurement principle of its sound pressure level are summarized. The paper emphatically analyzes the methods for measuring the nominal effective coupler volume and the sound pressure level of piston-phone with unknown coupler volume. 本文简要介绍了活塞发声器的工作原理及其声压级的测量原理,着重分析了未知耦合腔体积活塞发声器的有效体积与声压级的测量方法。