摘要
阐述了小波包去噪的原理及算法,介绍了虚拟仪器中应用小波包变换对信号的去噪方法.在LabVIEW平台中通过Matlab Script节点的方式实现了小波包变换对信号的去噪.通过仿真对小波包去噪与小波去噪效果进行了比较,结果表明,小波包去噪效果较好.
This paper expatiates upon the basic theory and algorithm of wavelet packet, introduces the method of de-noising signal in virtual instruments using wavelet packet transformation, and realizes the denoising proeess of signal using wavelet packet transformation by the MATLAB Scrip node on the LabVIEW platform. The de-noising results comparison shows that wavelet packet has better de-noising performance than wavelet.
出处
《重庆工学院学报（自然科学版）》
2008年第5期88-90,118,共4页
Journal of Chongqing Institute of Technology
关键词
虚拟仪器
小波包变换
去噪
virtual instrument
wavelet packet transformation
de-noising
