-
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
-
caculate_box_demension_matlab
自己编的计算盒维数的matlab源代码。将文本文件导到matlab中运行。(Own calculation of box dimension of the matlab source code. Introduction to the text file to run matlab.)
- 2007-09-23 13:04:03下载
- 积分:1
-
AHP
这是利用matlab编写的层次分析法例程,希望有所帮助。(This is the use of matlab routines written in AHP, hope help.)
- 2011-07-20 16:49:00下载
- 积分:1
-
Matlab-Project.zip.010
Matlab project which is in parts.
so please collect all 10 parts.
then extract it and enjoy.
- 2014-09-12 20:37:20下载
- 积分:1
-
human-testing
主要利用粒子滤波进行人体跟踪,能很好地进行人体跟踪(The main use of the particle filter for human body tracking, can be used for human body tracking)
- 2013-10-12 13:38:37下载
- 积分:1
-
M01
关于Matlab的课件,里面含有数学建模的基础知识,对于数学建模的了解是很有帮助的(Courseware on Matlab, which contains the basics of mathematical modeling, mathematical modeling for understanding is helpful)
- 2011-10-25 14:32:04下载
- 积分:1
-
47538419-SCWCD-5-0-310-083-Latest-Dump
SCWCD Question Papers
- 2015-01-07 04:08:29下载
- 积分:1
-
files
eigvec Eigenvectors and their geometric multiplicity.
eigval Eigenvalues and their algebraic multiplicity.
EIGSHOW presents a graphical experiment showing the effect on the
the unit circle of the mapping induced by various 2-by-2 matrices.
determ Matrix determinant plu.
cramer Solve the system Ax=b.
- 2014-11-19 02:14:03下载
- 积分:1
-
cichangxian
磁场线分布,根据一个磁场,然后仿真出它的强弱分布等等吧
磁场线分布,根据一个磁场,然后仿真出它的强弱分布等等吧
磁场线分布,根据一个磁场,然后仿真出它的强弱分布等等吧(cichangxianfenbucichangxianfenbucichangxianfenbucichangxianfenbucichangxianfenbucichangxianfenbu)
- 2011-01-02 20:25:43下载
- 积分:1
-
yuece
matlab源程序代码,基于BP网络算法用于股票的预测,有修正的过程,过程中有些代码缺少!(matlab source code, based on BP neural network algorithm is used to predict the stock, during some of the code is missing! ! !)
- 2013-08-30 21:05:55下载
- 积分:1