电动式扬声器阻抗曲线分析与测量  

Electrodynamic Loudspeaker Impedance Curve Analysis and Measurement

作　　者：朱德铭 邝永辉 艾晓晓 

机构地区：[1]广东省质量监督电声产品检验站,广东江门529000

出　　处：《电声技术》2015年第6期15-19,共5页Audio Engineering

摘　　要：扬声器的相关性能指标包括频率响应与有效频率范围、额定频带的特性灵敏度级、谐波失真、额定噪声功率、额定阻抗、额定共振频率,其中额定阻抗、额定共振频率可以从阻抗曲线中得到。围绕扬声器的阻抗曲线,先介绍了扬声器的分类,再重点介绍电动式扬声器的工作原理与等效电路,最后分析了扬声器阻抗曲线以及利用PULSE电声分析系统测量扬声器的阻抗曲线。The performance indicators about speaker including frequency response and the effective frequency range, the characteristic sensitivity level for rated frequency band, the harmonic distortion, the rated noise power, the rated impedance and the resonant frequency. The rated impedance and the resonant frequency can be obtained from the impedance curve. This paper focuses on the impedance curve of the speaker, the classification of the speaker, the working principle of electrodynam- ic loudspeaker and the equivalent circuit are introduced, at last speaker impedance curve is analyzed and the use of PULSE acoustic analysis system for measuring impedance curve of the speaker is introduced.

关 键 词：电动式扬声器 额定阻抗 阻抗曲线 PULSE电声分析系统 

分 类 号：TN643[电子电信—电路与系统]