-
m_seq1
选择13级移位寄存器的初始数据,用移位加反馈的方法生成级数为3~13的m序列(The selection of the initial data of 13 level shift register, series is generated by shift plus feedback method for 3 ~ 13 m sequence
)
- 2013-10-10 00:11:36下载
- 积分:1
-
guess
此程序描写了一个猜数过程,系统在给定范围内随机生成一个数,如何根据提示在较少的次数内才对这个数。(This procedure describes a guessing process, the system randomly generated within a given range of a number of tips on how to lower the number of times the number of fishes.)
- 2010-12-21 10:39:42下载
- 积分:1
-
MATLAB_0
MATLAB教程,可以很好的进行matlab的系统学习(MATLAB tutorials, can be very good for a systematic study of matlab)
- 2011-05-18 09:10:27下载
- 积分:1
-
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
-
visiope
short program that computes a rect
- 2009-10-22 13:32:12下载
- 积分:1
-
boxcnt
this code perform boxcounting algorithm on picture
- 2012-04-02 20:26:54下载
- 积分:1
-
resonator
光通信中基本器件微环的基本分析,这个分析是在理想情况下分析的,没有考虑损耗(Basic analysis of the basic device in the optical communication microring, this analysis is in the ideal case the analysis, without considering loss)
- 2012-09-03 17:02:56下载
- 积分:1
-
Py
说明: 使用蛙跳算法来解决一个工厂流程问题的事例(Frog hopping algorithm solves factory process problems)
- 2019-03-30 09:11:20下载
- 积分:1
-
tendency
关于线性非线性趋势项去除方法的研究及总结(Items on the linear non-linear trend removal method of research and summary)
- 2010-01-19 12:27:14下载
- 积分:1
-
matlab
数字图像频域滤波处理,分别进行二阶巴特沃斯(Butterworth)高通、低通滤波器。(Digital image processing frequency domain filtering, respectively second-order Butterworth (Butterworth) high pass, low pass filter.)
- 2013-07-10 18:46:01下载
- 积分:1