驻极体单指向性传声器研究  

Study on Unidirectional Electret Microphone

作　　者：杨鑫峰[1] 彭科[1] 徐柏龄[1] 

机构地区：[1]南京大学声学研究所近代声学国家重点实验室,江苏南京210093

出　　处：《电声技术》2005年第8期24-27,共4页Audio Engineering

摘　　要：驻极体传声器目前主要是民用,单指向性驻极体传声器设计与生产的关键在于内部相移网络的控制。将声学原理图与电路处理方法相结合,建立了指向性驻极体传声器的理论模型,并对仿真结果和实测结果进行了对比,结果表明所建立的模型能较好地预测传声器的性能。Electret condenser microphones （ECM） have been widely used in many communication fields. The key technique in design and manufacture of unidirectional ECM is how to control the internal phase-shift network. In this paper, both the electro-acoustic theory and analysis methods of circuit are used. A model of unidirectional ECM is established. The simulation results are compared with the measurement results, both of which conform to each other.

关 键 词：指向性传声器 驻极体 相移网络 叠加原理 

分 类 号：TN641[电子电信—电路与系统]