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实现dft基本功能。对频率分辨率有特殊说明，希望对您有帮助。(The realization of the basic functions of dft. Frequency resolution of special note, I hope for your help.)

FFT源代码，该源代码比较全面，稍微改动即可使用，欢迎下载，谢谢！(FFT source code, the source code is more comprehensive, you can use a little change, welcome to download, thank you!)

说明：  若锗中含有一定数量的杂质元素Sb，试根据要求分析杂质浓度与电离度以及电离温度之间的关系： （1）当Sb浓度分别为 和 时，计算杂质99％，90％和50％电离时的温度各为多少？ （2）根据一定杂质类型和杂质浓度，画出电离度和温度的关系图线，并确定半导体处于强电离区（电离度>90％）的温度范围。 设计要求：（1）具有友好输入输出界面； （2）调整输入数据，得出相应结果，并进行分析。 (If the germanium containing a certain number of impurity elements Sb, test analysis in accordance with the requirements of impurity concentration and ionization degree, as well as the relationship between the ionization temperature: (1) When the Sb concentration and time were calculated 99 percent of impurities, 90 and 50 ionization When the temperature of each number? (2) according to certain types of impurities and impurity concentration, ionization degree and temperature to draw the relationship between the graph lines, and to determine the semiconductor in a strong ionization zone (ionization degree)

This paper deals with the problem of speech enhancement when only a corrupted speech signal is available for processing. Kalman filtering is known as an effective speech enhancement technique, in which speech signal is usually modeled as autoregressive (AR) model and represented in the state-space domain.(This paper deals with the problem of speech enhancement when only a corrupted speech signa l is available for processing. Kalman filterin g is known as an effective speech enhancement te chnique. in which speech signal is usually modeled as aut oregressive (AR) model and represented in the s tate-space domain.)

对正交频分复用的仿真，主要针对其简单原理进行仿真(On orthogonal frequency division multiplexing of the simulation, the main principle for its simple simulation)

对pmu配置的一群算法，绝对简单好用，对遗传算法的一种改进(Pmu configuration of a group of algorithms, absolutely easy to use, an improved genetic algorithm)

fixed load pscad 4.2.1

用MATLAB实现遗传算法解决0-1背包问题。 赌轮选择，单点交叉，变异(GA_MATLAB about 0-1knapsack problem roulette wheel selection; single-point crossover; variation;)

说明：  matlab统计工具箱，概率分布举例应用，外加ode23运算举例(matlab learning)

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