ppt-jiqiao03

科学出版社出版，数学故事，让数学不再枯燥(Science Press, math story, so math is no longer boring)

说明：  PPT for business office, simple style, suitable for many occasions

对于学习信息论的各位朋友们帮助很大，精炼易懂(It is very helpful for those who study information theory,it is Refining and easy to understand. )

CPLEX的学习资料，最近用这个软件的人越来越多了，尤其是PPT文件，很适合初学者快速入门 (CPLEX learning materials, most recently with this software, more and more people, and especially the PPT file, it is suitable for beginners Quick Start)

使用qt-c++來做為gui應用的教學檔，包含建立環境與第一次的Project建立(Use qt c++ to do the teaching file for gui applications, including the establishment of the environment and the establishment of the first Project)

vhdl语言试验箱GW48的各种模式引脚图。。(vhdl language the various modes of chamber GW48 pin map. .)

次同步振荡，论文对同步发电机建模，串补建模，信号测试法都有较清晰的说明。(Subsynchronous oscillation, the paper has clear explanation for synchronous generator modeling, series compensation modeling and signal test method.)

说明：  What is data structure? A data structure is a way of organizing data that considers not only the items stored, but also their relationship to each other. Advance knowledge about the relationship between data items allows designing of efficient algorithms for the manipulation of datList out the areas in which data structures are applied extensively?  Compiler Design,  Operating System,  Database Management System,  Statistical analysis package,  Numerical Analysis,  Graphics,  Artificial Intelligence,  Simulation

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.)

人脸识别原理介绍 有一些算法介绍 并附加图解 适合初学者(language：English from university of British)