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Program for : 1) ZOOMING , 2) SHRINKING & 3) GRAY LEVEL RESOLUTION

耳蜗实质上相当于一个滤波器组，耳蜗的滤波作用是在对数频率尺度上进行的，在1000HZ下，人耳的感知能力与频率成线性关系；而在1000HZ以上，人耳的感知能力与频率不构成线性关系，而更偏向于对数关系，这就使得人耳对低频信号比高频信号更敏感。Mel频率的提出是为了方便人耳对不同频率语音的感知特性的研究。频率与Mel频率的转换公式为(on logarithm frequency scale, under the 1000 hz, the perception of the human ear and a linear relationship with frequency In more than 1000 hz, the perception of the human ear does not constitute a linear relationship with frequency, and prefer to logarithmic relationship, which makes the human ear is sensitive to low frequency signal is better than high frequency signal. Mel frequency is put forward in order to facilitate the ear of the study of speech perception characteristics of different frequency. For frequency and Mel frequency conversion formula )

matlab图表，matlab代码源码，是matlab自带的code(matlab logo code)

绘制控制系统近似bode图，为了做自动控制原理作业时偷点懒。虽然matlab自带bode函数但是作业要求画近似的。(Drawing control system approximation bode diagram, when you steal lazy to do the job of Automatic Control Theory. Although matlab function but the job comes bode asked to draw approximate.)

改进的模拟退火算法，求解TSP问题，增加了升温过程，算法效果好。(Improved simulated annealing algorithm for TSP, increasing the heating process, a good algorithm results.)

无线光通信中的DCO ofdm 的接受检测代码(Wireless Optical Communication DCO ofdm receiving detection code)

通过simulink搭建了车辆1/4被动悬架模型，以便于选取最优的车辆控制策略(The passive suspension model of vehicle 1/4 is built by Simulink, so as to select the optimal vehicle control strategy)

反应扩散问题长期在研究领域中c++去实现, 现在我们用MATLAB也可以(Reaction-diffusion problem in the area of research in long-term c++ to achieve, and now we can use MATLAB)

仿真分析在格雷码和QAM调制下的SNR与BER关系(analyze gray code and QAM moudulation about SNR and BER relationship)

optimization power flow