DTMF

cad图层显示、关闭、冻结等快捷命令，非常好用(CAD layer display, close, freeze and other shortcut commands, very useful)

hslogic算法仿真，基于matlab的OFMD注水法仿真与分析。(Hslogic algorithm simulation, matlab based OFMD water injection method simulation and analysis.)

电力系统暂态稳定分析，分段计算法，matlab程序代码(Power system transient stability analysis, sub-method of calculation, matlab code)

说明：  俄罗斯方块。最经典的益智游戏，不仅可以学习，还能增加想要的功能(Tetris. The most classic puzzle game can not only learn, but also increase the function you want)

说明：  一个abaqus的vumat子程序，在一个模型中两种用户自定义材料。(A ABAQUS VUMAT subroutine, two user-defined materials in a model.)

说明：  hsms 源码，该源码来自网络，看了下，还比较好，有需要的同学可以下载看看(HSMS source code, the source code from the network, look at it, it is better, students in need can download and see)

atmel公司 arm SPI接口初始化程序-Atmel Corporation arm SPI Interface initialization procedure

说明：  项目开发用到的版本控制软件SVN，介绍一些实际操作，易懂(SVN, the version control software used in the project development, introduces some practical operations and is easy to understand)

瑞利信道下，OFDM系统中使用BPSK调制的误码率（验证可用，与理论值比较）-BER for BPSK in OFDM with Rayleigh multipath channel

本文通过对男性和女性声音的语音特征的研究，发现男女声的基音频率存在较大的差异，并设计了基于基音频率分析的男女声识别系统。男女声识别系统由以下三个模块电路构成：话筒放大器，低通滤波器，半波整流电路，单片机测量控制模块。话筒放大器采用NE5532P音前置芯片，对语音信号进行放大；八阶低通滤波器MAX293完成基音信号的提取；单片机STC12C5410AD实现频率测量和控制输出功能。经仿真与电路实测，男女声的识别效果良好。(In this paper, the voices of male and female voice characteristics of the findings of a study of the fundamental frequency of the sound of men and women there is a big difference, and the design of frequency analysis based on the pitch of the voice recognition system for men and women. Voice Recognition System for men and women from the circuit the following three modules: the microphone amplifier, low-pass filter, half-wave rectifier circuit, single-chip measurement control module. NE5532P sound using the microphone pre-amplifier chip amplification of voice signals eight MAX293-order low-pass filter to complete the extraction of pitch signal STC12C5410AD single-chip realization of the frequency of measurement and control output. By circuit simulation and measurement, the identification of male and female voices well.)