Understanding_Digital_Signal_Processing_2nd_ed

说明：  基于小波变换的图像降噪处理及实现程序的源代码(Image denoising based on wavelet transform processing and realization of the program source code)

以matlab实现数字水印的生成和提取，用的是高斯随机序列生成的易碎的隐式数字水印。(to Matlab digital watermark generation and extraction, using a Gaussian random sequence generation of friable implicit digital watermarking.)

程序主要是求一段音频数据的基音频率 jiyinzhouqi.m --------求基音周期 find_maxn.m --------求自相关函数的最大值 test2.wav --------程序中用到的示例wav数据文件(The program is mainly the fundamental frequency for an audio data Jiyinzhouqi.m- for pitch period Find_maxn.m- the maximum value of autocorrelation function Test2.wav: the procedures used in the example of wav data file)

用于特征脸识别的MATLAB经典代码，本科毕业设计所做，调试成功，运行结果理想(Face Recognition MATLAB for feature classic code, doing graduate design, debugging success, the results are satisfactory)

用collocation方式对过河问题进行优化(collocation OPT)

灰色预测代码用于根据现有数据来预测未来一段时间的数据(Grey prediction according to existing code is used to data to predict the future a period of data)

二维圆形随机骨料生成，算法采用matlab随机数生成。(Generation of two dimensional circular random aggregate.The algorithm uses random number generation function.)

调用matlab中的ode45函数解微分方程，ode45解方程方法用的是四阶五级的龙哥库塔法(Call the matlab ode45 function solving differential equations, ode45 solve the equation method of fourth order with is the fifth longge coulthard method )

解决最短路经的matlab程序，很详细。。(Solve shortest path matlab procedures, very detailed. .)

信号相位匹配原理的三子真仿真程序。估计信号波形(Signal phase-matching principle of the third son of true simulation program. Estimated signal waveforms)