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前段时间在北大OJ平台上做的几个题目，主要用到几个知识点...(OJ platform some time ago at the university to do the subject ...)

实现语音断点检测的程序，有静音处理和噪声去除，已编译通过。(Voice breakpoint detection program, mute processing and noise removal, compiled by.)

A power inverter is a device that converts DC power (also known as direct current), to standard AC power (alternating current). Inverters are used to operate electrical equipment from the power produced by a car or boat battery or renewable energy sources, like solar panels or wind turbines. DC power is what batteries store, while AC power is what most electrical appliances need to run so an inverter is necessary to convert the power into a usable form.

基于matlab的遗传算法，程序简洁明了(Based on genetic algorithm matlab, the program clear and concise)

直接序列扩频仿真实例，产生m序列，然后进行扩频通信，对初学者很有用啊(Direct Sequence Spread Spectrum simulation example, useful for beginners )

在Matlab中，用PCA程序提取两个统计量：T2和Q从而应用在机械故障的预测中，我个人觉得还可以，希望大家指正。(In Matlab, with the PCA program to extract the two statistics: T2 and Q and thus used in the prediction of mechanical failure, I personally felt that I can and hope that we corrected.)

a source code to do the compression with low a and low mu

修改过的较为简单易懂的代码，encode代码为一个单独的循环编码，可根据需要修改采用，前边几个为一个完整的H、G矩阵生成代码，及校验代码，简单易懂，码长，迭代次数各种参数都可根据需要进行修改。(The modified relatively simple code, the encode code for a single cycle code, can be modified according to the need, in front of a few for a complete H, G matrix to generate the code and check code, simple and easy to understand, code length, iteration number of various kinds of parameters can be modified according to the needs of.)

说明：  详细的介绍用Matlab处理数字信号的方法(Detailed introduction of digital signal processing using Matlab method)

hilbert黄变换处理端点效应的几种算法，需要外加信号(hilbert transform processing yellow endpoint effect of several algorithms, require the addition of signal)