小波分解和重构 小波分解和重构 -thr=sigma*(2*lgN)1/2/lg(j+1) 用[x,xn]=wnoise(2,10,6) 产生噪声测试数据-The following is Part I of a of hard and soft threshold denoising matlab procedure is the following hardware and software, I made a threshold denoising matlab program: thr

未使用matlab小波函数实现图像的二维小波分解和重构，分解和重构结果有对比-Matlab wavelet function is not used to achieve a two-dimensional image wavelet decomposition and reconstruction, decomposition and reconstruction contrasting results

通过使用matlab自带的小波函数对语音信号进行处理，首先对载入的语音信号snow.wav添加高斯白噪声，然后对加噪的语音信号进行三层小波分解，最后分别采用强制性和默认阈值两种方法对信号进行消噪处理，强制性消噪方法直接将分解的高频系数全部变为0，默认阈值通过对分解的高频系数设定阈值来进行消噪-By using MATLAB built-in wavelet function of speech signal processing, first on the loading of the spee

用MATLAB对一语音信号进行小波分解，分别用强阈值，软阈值，默认阈植进行消噪处理。-Using MATLAB to a voice signal wavelet decomposition, respectively intensity threshold, soft threshold, default threshold denoising processing plant.