此源码使用C语言来编写，实现小波变换，并在DSP中实现-This source using the C language to write to achieve wavelet transform, and DSP to achieve

c语言编写的db4小波变换程序，包含滤波器函数，小波分析和小波重构，可以直接使用，对写其它小波程序有参考价值。-written in c db4 wavelet transform procedures, including filter functions, wavelet analysis and wavelet reconstruction, can be used directly on to write other wavelet process a valuable referenc