C++实现语音的特征参数提取

研究生期间上《数值计算方法》课的作业，所有代码都是C语言实现并调试通过，现在上传为大家服务。这是Doolittle分解的算法-"numerical methods" courses of operations, are all code and the C language debugging passed, and upload to us. Try This is the decomposition algorithm

QR分解法是三种将矩阵分解的方式之一。这种方式，把矩阵分解成一个正交矩阵与一个上三角矩阵的积。QR分解经常用来解线性最小二乘法问题。QR分解也是特定特征值算法即QR算法的基础。

memetic是一种高效的文化进化计算方法，该范例以Rosenbroek函数为例进行了演示，你也可以加入其它函数进行测试。-memetic cultural evolution is an efficient method of calculating the sample to Rosenbroek function as an example of the presentation, you can also add other functions to be tested.非原创，仅限分享。

C++ split函数，可以实现字串的分割。可自定义分割符号，方便在编程时使用，根据需求设定分割字符或字符串均可。实用测试正常。

基于51ds1302、ds18b20数码管显示 基于51ds1302、ds18b20数码管显示基于51ds1302、ds18b20数码管显示基于51ds1302、ds18b20数码管显示基于51ds1302、ds18b20数码管显示

详细表述了分数阶傅立叶变换的离散实现，将现有的算法进行比较。-In this note we make a critical comparison of some matlab programs for the digital computation of the fractional Fourier transform that are freely available and we describe our own implementation that lters the best out of the existing ones. Two types of transforms are considered: First the fast approximate fractional Fourier transform algorithm for which two algorithms are available. The method is described in H.M. Ozaktas, M.A. Kutay, and G. Bozdagi. Digital computation of the fractional Fourier transform. IEEE Trans. Signal Process., 44:2141{2150, 1996. There are two implementations: one is written by A.M. Kutay the other is part of package written by J. O Neill. Secondly the discrete fractional Fourier transform algorithm described in the master thesis C . Candan. The discrete fractional Fourier transform, Bilkent Univ., 1998 and an algorithm described by S.C. Pei, M.H. Yeh, and C.C Tseng: Digital fractional Fourier transform base

二格码转换的算法-two grid transcoding algorithm

应用密码学：协议、算法与C源程序 DES 源码 Additional functions not in the MIT library are: des_dea    - Identical to des_ecb_encrypt. des_key    - Same as des_set_key without any parity      or weak-key test. des_ecb2_encrypt    - The Electronic Code Book mode of      encryption/decryption on

应用背景对stm32串口不了解的同学可以看看，串口可以用来传输数据，用来调试程序也是最好的选择。关键技术stm32串口中断发送接收，使用PC端超级终端或任何串口软件发送数据stm32自动接收返回原数据，实现串口双向通讯。

function.txt是测试文件，以文件形式读取，都是以字符格式读入的，已试过，可以使用，它开始会将频繁项集都展示出来，如频繁一项集频繁二项集，可以在代码开始自己设置支持度