chapter2

灰度图转换，可以把彩色图片转换为灰度图片。并进行计算(Grayscale conversion, color images can be converted to gray-scale image. And calculated)

Square PA=LU factorization *with row exchanges*.

matlab包括最基本的语音处理程序（如谱减法，谱幅度估计，语谱图等）以及语音库(Located in this Prentice Hall web site compartment are functions, scripts, workspaces, and data required by the MATLAB exercises in the text: Discrete-Time Speech Signal Processing: Principles and Practice. Note that the speech files given are often specific cases of a certain class of speech signal, i.e., the waveforms often can be replaced by other examples with similar characteristics that serve the instructive purpose of the exercise.)

去噪为仿真信号建立； 去噪1为eemd去噪； 去噪2为形态滤波器； 去噪3为小波去噪，全局阈值，给定阈值（软阈值，硬阈值）； 去噪4为实际去噪(2 for morphological filter denoising Denoising 3 as the wavelet denoising, global threshold, the given threshold (soft threshold and hard threshold) 4 for practical denoising denoising)

2FSk循环码 基于matlab的开发程序 检测误码率(2FSk cyclic code)

说明：  简单的Grid Search法，是与斐波那契、黄金分割、二分法相比较最简单的求最小值的方法(simple grid search method)

说明：  AUC calculation, including mapping, calculation value

一个实现vc与matlab接口的程序，可在vc构建的平台上实现matlab的函数调用(a realization vc Matlab interface with the procedures in vc build on the platform to achieve the function call Matlab)

短时傅里叶的变换，在时域中表示，画出其等高图，三维图等等(Short-time Fourier transformation, said in the time domain, draw the contour map, three dimensional figure, and so on)

通过遗传算法对神经网络的结构进行优化,避免参数选取的盲目性(Through genetic algorithms to optimize the structure of neural networks, to avoid the blindness of parameter selection)