这本书是非常具有实用性的书籍，它具有如下特性：1.在第一章中对小波变换所需要的傅里叶变换和滤波器的知识予以介绍，2.对小波变换中的重要内容从物理意义和信号处理角度予以直观解释，3.对小波变换中的一些重要公式给予简洁的数学推导。在最后一部分中介绍了小波变换的Matlab工具的应用。-This book is very practical books，it has the following features：1.Fourier transform and filter　required at the wavelet transform introduced in the first chapter ，2.Physical meaning and signal processing point of view to be an important part in the wavelet transform from visual interpretation,3.Give a simple mathematical derivation of some important formulas in the wavelet transform.In the final part describes the application of wavelet transform Matlab tools.