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matlab
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)
- 2013-03-12 13:47:15下载
- 积分:1
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moshishibie
对X应用贝叶斯分类,对X的前两类训练单层感知器(The classification of X application of Bias,on the X of two kinds of training single-layer perceptron)
- 2013-04-16 18:39:10下载
- 积分:1
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图像倾斜矫正以及识别
对工业指针式仪表的倾斜图像进行自动矫正以及读数识别(Automatic correction of slant images and readout recognition)
- 2017-07-02 08:46:52下载
- 积分:1
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Kalman_Filter
说明: 两个简单的卡尔曼滤波的例子,适合初学者掌握基本原理。(Two simple examples of Kalman filter, suitable for beginners to master the basic principles.)
- 2010-04-12 23:24:24下载
- 积分:1
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psoandqpso
基本的粒子群算法以及使用具有量子行为的粒子群算法,能够很好的用于全局的寻优(The basic particle swarm optimization and the use of a quantum particle swarm behavior can be very good for the overall optimization)
- 2010-05-07 17:02:11下载
- 积分:1
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remmean
该函数是matlab编写的对一列数据进行去平均处理,两种去平均的方法(里面有三个程序),里面有详细解释说明,看看即懂!(This function is a matlab prepared to go on an average of the data processing, two kinds of methods to average (there are three procedures), which has a detailed explanation, see that understand!)
- 2014-02-03 22:42:28下载
- 积分:1
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aBookOfMatlab
一本讲授matlab基本知识的书籍,有很多例子,可以帮助入门的人学习。(A basic knowledge of teaching books matlab, there are many examples that can help people who started to learn.)
- 2010-12-29 17:01:18下载
- 积分:1
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zitai
空间飞行器三轴稳定姿态动力学仿真,三轴稳定姿态动力学仿真(Stable attitude dynamics simulation of the space vehicle three weeks)
- 2012-07-25 16:10:01下载
- 积分:1
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qsyn10
matlab下用于稳定系统设计的库文件,可以作为辅助设计系统的软件使用(Qsyn
the Toolbox for
Robust Control Systems Design
for use with Matlab)
- 2013-11-14 18:41:58下载
- 积分:1
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ffft
A program for computing the fast forier transformation (FFT).
- 2010-10-13 21:26:26下载
- 积分:1