Speech_Signal_Processing

matlab文件实现QPSK调制，信号频率1，采样频率100(QPSK Modulation)

用ＭＡＴＬＡＢ　进行人脸方向识别，适合做学习模式识别以及机器学习的同学学习(Using MATLAB face direction recognition, suitable for studying pattern recognition and machine learning of students learning)

embed and extract an image in lsb of audio!!

Matlab Implimentation of Exact Solution for the n-layer Sphere Problem

不知道上次是不是传上去了，再传一个吧，还是数字水印的提取程序(Do not know the last time was not passed up, re-transmission of a bar, or a digital watermark extraction procedure)

说明：  MIT图像实验室的NMF代码,将一幅图像分解成多个特征部分(NMF image processing codes by MIT)

Slicot is used with hanso and hifoo

求出laguerre滤波器的分子分母系数，绘出其幅频响应图并与FIR滤波器作比较。该程序为19阶Laguerre低通滤波器和22阶带通滤波器(obtained laguerre filter coefficient of molecular denominator, chart its amplitude frequency response plans with the FIR filter for comparison. The procedure for the 19-Laguerre low-pass filter and 22 band pass filter)

说明：  基于BP网络的字母识别MATLAB源程序，可以对给定的字母进行识别。(BP network based on letter recognition MATLAB source, you can identify a given letter.)

说明：  考虑网络约束、天然气节点约束、潮流约束的电-气耦合互补系统的最优出力情况(The optimal output of the electricity-gas coupled complementary system considering network constraints, natural gas node constraints, and power flow constraints)