【作者】 鄂治群； 孙磊；

【Author】 E Zhi-qun,SUN Lei (National Institution of Measurement and Test Technology,Chengdu 610021,China )

【机构】 中国测试技术研究院；

【摘要】 研究了传声器耦合腔互易校准原理,对传统的互易校准方法进行了介绍。在发射端的传声器上串联一个参考电容,通过测量参考电容两端的电压,得到发射电流,提高了电转移阻抗的测量效率和准确度。应用等效电路的方法,对互易校准系统的测试原理进行分析。分析了引入参考电容的技术优势。更多还原

【Abstract】 Introduced the principle of primary pressure reciprocity calibration of microphones and traditional methods.A reference capacitor is connected in series with the transmitter microphone,by measuring the voltage across the reference capacitor,the transmitter current is derermined.this new method improve the measurement efficiency and accuracy of electrical transfer impedance.The application of the equivalent circuit method,were used to analysis the diagram of reciprocity calibration system.Introduced the technical advantages of using the reference capacitor.更多还原