codes

Ackley测试函数，经过实验的确可以用，哈哈，分享给大家(Ackley test function, indeed can be used through the experiment, ha ha, for everyone to share)

基于matlab对语音进行特征参数提取，毕业论文等神器，用处很大(Based on matlab voice characteristic parameter extraction, thesis artifact, useful)

说明：  EM算法，最大期望值算法，用MATLAB程序来编程(EM algorithm, expectation maximization algorithm using MATLAB program to program)

MATLAB语言实现的LSTM长短期记忆神经网络模型(LSTM Long-term and Short-term Memory Neural Network Model Implemented by MATLAB Language)

说明：  幅度调制 频率150Hz～400Hz 上边带SSB 下边带SSB 各波形以及频谱(Amplitude modulation frequency of 150Hz ~ 400Hz above bottom band SSB spectrum with SSB, as well as the wave)

说明：  坐标转换：已知n个点在a,b两坐标系中的坐标值，采用优化方法求转换关系（标准的7参数转换关系，x,y,z的移动，x,y,z的旋转，以及缩放系数）ps:附带空间旋转公式。input: points in A and B。 output：transfer relationship （u,v,w: shit of x,y,z。 a,b,g: rotate of x,y,z 。k：zoom）(Coordinate Transfer:A,B are tow coordinates. This program using optimal method to find the transfer relationship of A and B. input: points in A and B。 output：transfer relationship （u,v,w: shit of x,y,z。 a,b,g: rotate of x,y,z 。k：zoom） )

说明：  关于matlab7的介绍与初步使用,适合新用户上手,阅读需下载ssread阅读器(About matlab7 introduction and initial use for new users get started, read the reader need to download ssread)

说明：  计算互信息，函数内提供注释，各位可以仔细阅读，欢迎各位下载。(calculate mutual information)

BPSK调制及其解调过程实现的matlab仿真.(BPSK modulation and demodulation process to achieve the matlab simulation.)

Matlab连续系统的数字PID控制程序，可实现A/D，D/A功能，符合现场实际情况。(Matlab figure for PID control system procedures, can be A/D, D/A functions, in line with the actual situation at the scene.)