cortex-m3

GEF中文教程书籍源码.这个是第6章的代码。(GEF Chinese tutorial source books and this is the code in Chapter 6.)

hht1.介绍2.非平稳数据处理方法回顾（声谱图、小波分析、WVD、改进谱、经验正交函数展开、其他各类方法）3.瞬时频率4.固有模态函数5.经验模式分解方法：过滤方法6.完整性和正交性7.希尔伯特谱8.确认和校准希尔伯特谱9.应用（经典非线性系统大量的结论、试验中得到的观测数据）10.讨论11.结论(1. Introduction 2. Non-stationary data processing methods Review (spectrogram, wavelet analysis, WVD, improving the spectrum, empirical orthogonal function expansion, other types of methods) 3. Instantaneous frequency of 4. Intrinsic mode function 5. Empirical Mode Decomposition Methods: filtering methods 6. completeness and orthogonality 7. Hilbert spectrum of 8. to identify and calibrate Hilbert spectrum 9. Applications (classical nonlinear systems a lot of conclusions, the trial in the observational data) 10. discussion 11. Conclusions)

python源码剖析，带详细目录，觉得好请点赞(Python source code analysis)

说明：  关于Python的一些资料，帮助快速学习Python(The Guide of Python Quickly)

无线电侦察信号分析与处理的经典书籍，具有重要的指导作用(Radio reconnaissance signal analysis and processing of classic books, has an important role in guiding)

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.)

编译原理 龙书，内容非常不错，适合学习，大家尽管下载(Compilation Principle long book, very good fit study, even though everyone download)

Baker s book on analog PLL

说明：  小波分解的入门级教材，内容不多，但讲解平实，简单易懂，可以作为刚开始学习小波的同学的阅读材料(wavelet decomposition of the entry-level teaching materials, as small, but on the down-to-earth, simple, as it has just begun to study wavelet students reading material)

说明：  结构随机振动，很经典的英文原版课本。Random Vibrations Analysis of Structural and Mechanical Systems(Random Vibrations Analysis of Structural and Mechanical Systems)