MMSE

5 m-files 1:SQ.m : converts from s-domain to q-domain 2:ZQ.m : converts from z-domain to q-domain 3:sym2s : converts from symbolic to s-domain tf2str : Converts from Transfer function to string sym2str : converts from symbolic to string

在采样点之间的频率响应是由各采样点的加权内插函数叠加而形成的，因而有一定的逼近误差。该误差大小取决于理想频率响应的形状，理想频响特性变化越平缓，内插值越接近理想值，逼近误差越小；反之，如果采样点之间的理想频响特性变化越陡，则内插值与理想值之间的误差越大，因而在理想滤波器不连续点的两边，就会产生尖峰，而在通带和阻带就会产生波纹。用频率采样法设计的实际滤波器频率响应如图1所示。由图1可知，实际滤波器的阻带衰减取决于内插函数第一旁瓣幅度值的大小，其大小决定了所设计的滤波器的阻带性能。(Interpolation function superimposed between sampling points of the frequency response is weighted within each sampling point and the formation of, and thus have a certain degree of approximation error. The size of this error depends on the shape of the ideal frequency response and the ideal frequency response characteristic change is more gentle, interpolated and more close to the ideal value, the smaller the approximation errors Conversely, if the sampling point between the ideal frequency response characteristics of the steeper the change, and then the interpolated the larger the error between the ideal value, and thus in the ideal filter both sides of the discontinuity point, will produce spikes occurs ripple in the passband and stopband. Actual design frequency sampling filter frequency response is shown in Figure 1. Figure 1 shows, the actual filter stopband attenuation depending on the interpolation value of the size of the first side-lobe amplitude of the function that determin)

本文首先介绍了三电平逆变器的工作原理，以及空间电压矢量控制技术的基本原理。 其次，详细分析了传统三电平SVPWM算法，对每个主要模块都提出两种MATLAB仿真方法，归纳总结仿真技巧。(This paper firstly introduces the working principle of three-level inverter, and the basic principle of space voltage vector control technology. Second, traditional three-level SVPWM algorithm is analyzed in detail, for each main module proposed two MATLAB simulation method, sum up the simulation technique. )

matlab写的元胞自动机，有GUI可以方便的使用(matlab write cellular automata, there can easily use GUI)

机器学习算法， 使用Fisher score进行特征选择。(Machine learning algorithms, feature selection using Fisher score.)

二维声波传播过程模拟，采用一定合适的吸收边界条件(2D acoustic propagation simulation with PML boundary)

三重BOOST升压电路仿真，电压电流纹波小，效果较好(Three BOOST boost circuit simulation, voltage and current ripple is small, the effect is better.)

基于Wiener滤波的语音消噪Matlab源程序 调用方式： output=WienerScalart96(signal,fs,IS) signal－－输入含噪语音 fs－－－－语音信号采样率 IS－－－－起始静音端，用来估计噪声方差（秒做单位，默认是0.25秒） (Wiener filter-based de-noising of the voice call Matlab source code the way: output = WienerScalart96 (signal, fs, IS) signal- voice input with noise fs---- voice signal sampling rate IS---- Start mute end used to estimate the noise variance (units of seconds to do, the default is 0.25 seconds))

Lowpass filter with matlab

模糊自适应PID控制器（Simulink） 使用模糊控制器根据设定的模糊规则自适应调节PID控制器的三个参数(Fuzzy adaptive PID controller（Simulink） use fuzzy controller to tune three parameter of the PID controller through fuzzy rule )