huiseyuce

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)

MIPI Interface Introduction

在Matlab/Simulink构造一缓慢时变线性系统。试根据系统的输入生产数据分别用带遗忘因子最小二乘法和广义最小二乘法辨识系统的参数。(in Matlab/Simulink constructed a slow time-varying linear systems. Examination under the input production data were used to bring the forgotten factor method of least squares and generalized least squares method recognition system parameters.)

两个很实用的ECG信号生成器，代码较长的那个能生成较为真实的健康个体的心电信号(Two very useful ECG signal generator, the code can generate more longer true that the health of the individual ECG)

声纹识别，MFCC特征参数提取，Matlab代码(MFCC )

这是关于HHT的一个实际信号的HHT谱和边际谱源码。你只需复制到matlab即可运行。很实用。(This is about a real signal HHT HHT spectrum and marginal spectrum of the source code. You just copied to the matlab to run. Very practical.)

DCDC仿真电路，boost,buck,boost-buck(DCDC circuit simulation)

叶片元素计算法 基于叶素-动量理论（BEM）. 采用叶素-动量理论可以计算风轮旋转面中的轴向诱导。 风力发电用(BEM method for calculate the blade drage and lift force.)

The attached file is a tutorial on matlab that will provide the necesssary guidance to those programming in matlab.

simulink做的BPSK的调制与解调，信号源是随机信号与PN码扩频调制，最后结果与随机信号比较一致(simulink do BPSK modulation and demodulation, the signal source is a random signal with the PN code spread-spectrum modulation, the final result more consistent with the random signal)