DB4小波变换的实现 这是一篇学术论文，有主要程序部分-DB4 wavelet transform to achieve this is an academic, a major part of the procedure

一维小波的分解和重构，可以运行，三层降维和重构，小波降噪。很实用-matlab wavelet

用c语言写的db4多尺度小波去噪代码，效仿matlab的方式，将分解后的系数存放在原数组里-Db4 multi-scale wavelet denoising code, c language written emulate matlab manner, the decomposition coefficients stored in the original array

小波变换已应用到工程的各个方面，但一般只是应用MATLAB的小波工具包来编程，有时需要自己编程实现，故这里给出了DB4小波变换的C实现-Wavelet transform has been applied to all aspects of the project, but generally only apply MATLAB wavelet toolkit for programming, sometimes need their own programming, so here is a