matlab_fuhaojisuan

base is now HeapNumber with valid Smi value.

小波包分析提取振动信号中的特征频率，重要参数的提取，用于时频分析算法。( Wavelet packet analysis to extract vibration signal characteristic frequency, Extract important parameters, For time-frequency analysis algorithm.)

Matab file to calculate LC load response using simulink

Thi for image processing using matlab

超宽带信号的生成，以及用UWB信号实现MUSIC算法，得到AOA(Ultra-wideband signal generation, as well as the realization of MUSIC algorithm for UWB signals, the AOA)

实现MATLAB下的音频AGC,关键是要有高效的算法。效果不错。(MATLAB realize the audio AGC, the key is to have efficient algorithms. Good results.)

短时傅里叶变换可以用差分模式来实现，对书上的运算式做了稍许的改变。改变-计算差分序列的第一列数据时用的是第一列的元素减去当前行的最后一列元素。原算法中采用的是第一列元素减去下一行第二列元素。原算法加窗之后结果比较好，不加窗时结果误差很大，而改变之后的算法不加窗效果依然很好。(Short time Fourier transform can be used to achieve the differential mode of expression on the book made a slight change. Change- calculating the difference sequence of the data with the first column is the first column of the matrix by subtracting the current element in the last column of row. Is used in the original algorithm subtracts the elements of the first column of the next row and the second column elements. After the results of the original algorithm windowed better, when the results window without great error, and after changing algorithms no window effect is still very good.)

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说明：  只要检测到反电势过零点就可以得到转子的位置信号，就可以实现无刷直流电机的无位置传感器控制。(As long as the position of the rotor is detected by detecting the zero-crossing of the back-EM potential, the position sensorless control of the brushless DC motor can be realized.)

说明：  基于matlab的QPSK调制及其误码率曲线(QPSK modulation and the bit error rate curve)