摘要
为设计性能更加稳定的电容传声器,介绍了电容传声器的基本组成,讨论了电容传声器薄膜直径的大小、静压均衡孔所处声场中的位置、薄膜张力的大小及薄膜和背极板之间的距离、绝缘体等其它重要组成部分的不同特性对电容传声器性能的影响。以直径为1.27 cm(1/2英寸)的电容传声器为例,通过采用建立更为简单的等效电路模型的方法来完成其设计,并通过所建立的等效电路模型及相对应的各参量数据得出了电容传声器的幅频响应曲线和相频响应曲线,证实了该等效电路的正确性和可行性。通过上述讨论及实验对电容传声器在设计中的工艺要点提供了新的思考方向,也为电容传声器的设计提供了新的思路。
In order to design a more stable performance condenser microphone,this thesis introduces the composition of condenser microphone firstly,and then discusses clearly the effects of the size of the diameter,the position of static pressure equalization hole,the value of tension force and so on. The different characteristics of some other important parts of the condenser microphone are also discussed,such as the distance between the diameter and the back plate and the insulator. And then case study of a diameter of 1 /2 inch condenser microphone is researched. By the method of establishing a more simple equivalent circuit model a condenser microphone is designed. By using the equivalent circuit model and the corresponding parameters,its gain and phase curves of frequency response are plotted,respectively. The results confirm the correctness and feasibility of this equivalent circuit. Through the discussion and experiments,the article provides a new design direction for the condenser microphone.
出处
《实验室研究与探索》
CAS
北大核心
2016年第8期138-142,共5页
Research and Exploration In Laboratory
基金
国家安全重点基础研究计划(973计划)
(6132410201)
山西省回国留学人员科研经费资助项目
关键词
电容传声器
直径
静压均衡孔
张力
等效电路
condenser microphone
diameter
static pressure equalization hole
tension force
equivalent circuit
