SDFT FFT算法

用于进行声压转换的matlab文件，声压数据来源于ansys软件的计算后导出来的。(Used for sound pressure to convert matlab file, sound pressure data from the calculation software ansys guide out.)

从物理的角度看，音乐是不同频率，不同时长声波的组合，声波的频率表示不同的音调，声波的时长反映不同的节奏，根据该原理，将不同频率，不同时长的声波进行有序组合，则能成为音乐，利用MATLAB对不同频路信号的组合及分析功能，能够进行简单的音乐合成。(From a physical point of view, the music is different frequencies, not at the same time the combination of the long acoustic wave, the frequency of the acoustic wave which means that a different tone, sound waves reflect the length of time the type of rhythm, based on the principle of different frequencies, not at the same time long waves are conducted orderly composition, to become the music, using MATLAB combination of signals of different frequencies Road and analysis capabilities, able to perform simple music synthesizer.)

说明：  网络函数逼近实例1.首先定义正弦函数，采样率为20Hz，频率为1Hz 2.生成BP网络。用newff函数生成前向型BP网络，设定隐层中神经元数目为10 3.对生成的网络进行仿真并做图显示。 4.训练。对网络进行训练，设定训练误差目标为 1e-5，最大迭代次数为300 5.再次对生成的网络进行仿真并做图显示。(Network function approximation example)

encryption for an optical fiber drpe

这是GP算法进行遗传规划，里面代码齐全，是matla代码(This is the GP algorithm for genetic programming, which is code complete, the code is matla)

匈牙利算法，用于解决指派问题，对刚刚学习优化理论的朋友来说非常合适(Hungarian algorithm for solving the assignment problem)

用于Matlab环境下开发的求解VRP问题的源代码(Matlab environment for the development of the source code for solving VRP problems)

matlab code to read images

matlab中画国界、海岸线等地图的工具包(matlab painted borders, coastline and other maps Toolkit)

This package calculates 2D laplace problems using Boundary element method