运用虚拟仪器的设计思想,利用LabVIEW编程环境和MATLAB软件,根据小波分析对信号进行消噪处理的原理,设计、实现了一个多功能的虚拟小波消噪仪。该虚拟仪器可实现对信号的采集、保存、利用小波变换对信号进行消噪处理,并可动态显示消噪过程、消噪结果、打印信号及消噪处理结果波形,还可对信号进行频谱分析。实验结果表明,利用小波分析可以很好地保存信号中的尖峰和突变部分。 Design of Virtual Wavelet Noise Filter on LabVIEW YANG Qingchuan,HUA Yuning,ZHANG Yue (Shenyang Institute of Technology,Shenyang 110168,China) Abstract:The basic theory of eliminating noises by using wavelet transform was introduced.And further,use LabVIEW and MATLAB to simulate the virtual wavelet noise filter.It implemented eliminating the noise of signals using wavelet transform and then compared with the result of using usual filter.Consequently draw the conclusion that method using wavelet transform is more efficiency and practicality. Key words:virtual instrument;wavelet analysis; noise filter