6G

这是一本研究高效率测试的书，英文原版书籍。(This is a study of high-efficiency test book, the English original book.)

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.)

abaqus子程序详细教程，非常经典，对新手帮助很大(A subroutine of abaqus detailed tutorial, very classic, a great help for beginners)

复旦大学nios教材，一共有十章的内容，结合quartusii软件有详细的例子，图文并茂，可与周立功的sopc嵌入式系统基础教程配合学习nios(Nios, Fudan University, teaching materials, a total of 10 chapters, combined with software quartusii detailed examples, illustrations may be weeks of sopc meritorious basis for embedded systems with the tutorial to learn nios)

说明：  关于粒子滤波的原理及介绍，有相关MATLAB代码(About the principle and introduction of particle filtering, there are related MATLAB code)

论文四参数正弦波曲线拟合的快速算法，文中给出算法及算法实现程式(Papers four-parameter sine wave curve fitting of the fast algorithm, the text is given algorithm and algorithm programs)

VMM for SystemVerilog中文版 Synopsys推崇SystemVerilog的设计和验证语言 这是一本很好的电子书(VMM for SystemVerilog Chinese version of Synopsys highly SystemVerilog design and verification language This is a very good e-book)

初级了解数据挖掘可下载，大致明白什么是数据挖掘以及简单的案例(Preliminary connection data mining)

说明：  小甲鱼python教程的习题及答案，比较详细(Exercises and answers for the small turtle python tutorial, more detailed)

PYTHON核心教程，PYTHON开发必读(PYTHON core curriculum, PYTHON development of reading)