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ar
说明: 利用AR模型针对davenport谱的随机风速时程的模拟。(e moving model of the simulated wind speed time history。)
- 2012-04-11 13:49:13下载
- 积分:1
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UWB_matlamatlab
这是一个全面实现超宽带通信系统的matlab实现的仿真,还不错的(This is a full realization of UWB communications systems to achieve the Matlab simulation, but also good)
- 2007-03-29 21:45:07下载
- 积分:1
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J_UNIWARD_matlab
this simulation is a way for watermarking and steganography with j-uniward
- 2013-08-25 17:22:24下载
- 积分:1
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FIR
1、验证窗函数 N 变化时,验证其频谱主瓣副瓣比、主瓣宽度的变化。
a)矩形窗函数的 N 变化时,验证其其频谱主瓣副瓣幅度比基本不会发生变化,
而主瓣宽度将会变窄。这说明,当用矩形窗函数设计滤波器时,增大 N 不能使
得阻带衰减减小,但能够减小过渡带。
b)再选取其他的窗如 hamming/hanning 窗,验证当 N 变化时,其频谱主瓣宽
度变化、主瓣副瓣比值变化情况。
2、用窗函数法设计线性相位 FIR 低通,通带截止频率 wp=0.5PI, 阻带截止频率 ws=0.6PI,
阻带衰减不小于 40dB,通带衰减不大于 3dB.
a)选取 Hanning,Hamming 窗查看设计出来的 FIR 的过渡带宽和阻带衰减是否
满足要求,二者有什么不同。
b)使用 hamming 窗,将窗长增大 1 倍,设计 FIR。验证同样的窗函数类型
(hamming),不同窗长度时,设计出来的 FIR 的过渡带宽和阻带衰减都有什么变
化。
3、不使用 Matlab 系统函数得到上一项指标的低通,并与上一项结果比较。
4 用窗函数法设计线性相位 FIR 高通,通带截止频率 wp=0.8PI, 阻带截止频率
ws=0.7PI, 阻带衰减不小于 30dB,通带衰减不大于 3dB.(An actual filter is implemented using the truncated unit impulse response sequence of the ideal filter.
For the ideal low pass filter, the unit impulse response h, N, D () is intercepted by a length of N, and the length is
The N sequence H (n), when intercepted, guarantees causality and linear phase requirements for the filter.
In order to reduce the Gibbs effect, the H (n) window is added, and the appropriate window function is selected to ensure the stopband attenuation and
Transition zone requirement. Note that the sidelobe of the window function affects the stopband attenuation of the filter, and the main lobe width affects the filter
Transition bandwidth.)
- 2017-07-06 11:55:24下载
- 积分:1
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Matlab_database_GUI
Matlab GUI连接SQL数据库-实现学生成绩查询系统-matlab程序以及access文件(Matlab GUI to connect SQL database- to achieve student performance query system-matlab program and access files)
- 2010-08-09 12:15:44下载
- 积分:1
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Hidinginformationinbinaryimage
基于隐藏密钥可以,将秘密信息msg嵌入到二值载体图像cover,算法简单,主要适合于将密文隐藏在BMP格式的文档里。(Key can be based on hidden, secret information will be embedded into the binary vector msg image cover, simple algorithm, mainly for the cipher text hidden in the BMP format documentation.)
- 2010-11-16 16:18:31下载
- 积分:1
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arc_model_new
电弧仿真模型,delft大学,含有mayr、cassie等6种模型(Arc model, delft university, containing mayr, cassie six kinds of models)
- 2021-01-03 21:28:55下载
- 积分:1
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dbdoor
说明: 双门限算法,用于语音端点检测。可以通过调整门限值,并加入门限自适应算法,实现语音端点检测。(double door ,speech endpoint detection
two games adjust itself)
- 2010-04-19 16:57:18下载
- 积分:1
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physics
大学物理实验 基于matlab的光学实验仿真(College physics experiment based on the optical experiment simulation matlab)
- 2010-01-21 20:20:07下载
- 积分:1
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co_occurrence
灰度共生矩阵的产生,一个程序能够将一个矩阵让其生成对应的灰度共生矩阵(Gray level co-occurrence matrix, a program can be a matrix to generate the corresponding gray level co-occurrence matrix)
- 2012-04-02 22:27:26下载
- 积分:1