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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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Deskt423op
【谷速软件】读取医学数字成像和通信序列 可以做为参考使用 ([Software] read speed Valley Medical Digital Imaging and Communications in the sequence can be used as a reference to use)
- 2014-12-18 22:35:17下载
- 积分:1
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series
德国人开发的地震处理分析软件,包括了塑性、弹性、加速度谱分析、频谱分析等。不过界面是德语的(看不懂,呵呵)
(German development of seismic processing and analysis software, including plastic, elastic, the acceleration spectral analysis, spectrum analysis. But the interface is German (not read, Oh))
- 2007-03-14 16:53:59下载
- 积分:1
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position_update
update node position
- 2011-08-15 23:39:28下载
- 积分:1
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analisa
This model shows the implementation of a QPSK transmitter and receiver. The receiver addresses practical issues in wireless communications, e.g. carrier frequency and phase offset, timing offset and frame synchronization. The receiver demodulates the received symbols and outputs a simple message to the MATLAB command line.
- 2013-05-26 16:36:21下载
- 积分:1
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A-fuzzy-neural-network
算法的研究基于matlab模糊神经网络的预测算法-嘉陵江水质评价(A fuzzy neural network prediction algorithm
)
- 2020-09-11 08:07:59下载
- 积分:1
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APA
仿射投影算法,也就是APA算法的程序,可以通过简单修改变成NLMS算法!(Affine projection algorithm, namely APA algorithm procedures, through simple changes can be turned into NLMS algorithm!)
- 2021-04-21 10:48:49下载
- 积分:1
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kalman-example
可以对卡尔曼滤波有较为准确的认识与理解,并且对迭代算法有一定的了解。
(Can to kalman filter have relatively accurate knowledge and understanding, and to have some understanding of iterative algorithm.)
- 2011-09-27 10:08:52下载
- 积分:1
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6-3-1
exresice of marcel sidi
- 2013-09-07 19:34:31下载
- 积分:1
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Processorscheduling
用优先级判断的处理器调度模拟程序,程序运行时间结束后结束。(Used to determine the priority of processor scheduling simulation program, after the close of the program is running.)
- 2013-12-03 23:24:30下载
- 积分:1