This paper is a brief introduction to discrete wavelet transform as digital signal-processing technique and the application. The field of discrete wavelet transform (DWT) is an amazingly recent one because itÌ s better than Fourier transfor

以Matlab小波工具箱为基础，详细介绍小波分析应用于信号处理和图像处理的原理和方法，并对小波分析的数学基础做了简要介绍。-Wavelet toolbox in Matlab, based on details of wavelet analysis applied to signal processing and image processing principles and methods, and mathematical foundations of wavelet analysis t