摘要
为方便快速测量扬声器的频响曲线,对国内外扬声器测量系统进行分析后,提出并设计了基于LabVIEW的扬声器频率响应曲线测量装置。该测量装置使用线性调频信号作为扬声器的输入信号,利用麦克风采集扬声器发出的频响信号,并使用LabVIEW显示麦克风的采集结果,从而得到扬声器频率响应曲线。测量结果表明:该装置能准确测量出扬声器的频响曲线,并具有测量快速、操作简单等特点,能够满足扬声器频响曲线的测量要求。
In order to facilitate the quick measurement of the frequency response curve of the loudspeaker,after analyzing the domestic and foreign speaker measurement system,the frequency response curve measurement device based on LabVIEW was proposed and designed.The measurement device using linear frequency modulation signal as the speaker of the input signal,using frequency response signal from the microphone to collect the speaker,and using LabVIEW shows a microphone collect the results,and the frequency response curve is obtained.The measurement results show that the device can accurately measure the frequency response curve of the loudspeaker,and have the characteristics of fast measurement and simple operation,which can meet the measurement requirements of the loudspeaker frequency response curve.
作者
郭庆
沈泽鸿
苏海涛
徐翠锋
黄耀福
Guo Qing;Shen Zehong;Su Haitao;Xu Cuifeng;Huang Yaofu(Keylaboratory of Guangxi Automatic Detection and Instrumentation, Guangxi, Guilin, 541004, China;College of Electrical Engineering and Automation Guilin University of Electronic Technology, Guangxi, Guilin, 541004, China)
出处
《仪器仪表用户》
2018年第2期1-4,31,共5页
Instrumentation
基金
桂林市科学研究与技术开发项目(2016010404-3)
关键词
扬声器频响曲线
线性调频信号
虚拟仪器
loudspeaker frequency curve
linear sweep signal
virtual instrument
