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matlabwavelet
说明: matlab小波包变换功率谱的程序。比单纯小波变换具有更高的分辨率。(matlab wavelet)
- 2010-03-25 22:07:31下载
- 积分:1
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CDD
基于CDD的快速图像算法,适用于修复小面积破损区域。(CDD fast image-based algorithm, applied to repair the damaged area of the small area.)
- 2013-01-03 21:04:59下载
- 积分:1
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IM_scalar-control
Induction motor model with scalar control
- 2011-05-02 19:55:56下载
- 积分:1
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tf_gabor
一种时频变换,有利于初学者对其的认识,加深对时频信号的理解(a time frequency anlysis, contribute to understand for student)
- 2014-08-21 16:42:44下载
- 积分:1
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ofdm(complete)
正交频分复用(OFDM)的完整系统仿真程序,值得学习参考(Orthogonal Frequency Division Multiplexing (OFDM) is a complete system simulation program, it is worth learning reference)
- 2013-11-13 11:13:32下载
- 积分:1
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AM_Audio
使用matlab实现基于AM解调的广播声音接收,并通过GUI界面实现。(Using matlab based on AM demodulation receiving radio voice, and through the GUI interface implementation.)
- 2015-02-19 12:10:18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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PEAQ
根据itu-r bs.1387标准编写的客观测量音频质量的程序(According to itu-r bs.1387 standard written procedures for objective measurement of audio quality)
- 2010-11-29 17:34:42下载
- 积分:1
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lab0701-Echo
预加重和去加重是语音处理必不可少的环节,得到纯净语音(Pre-emphasis and de-emphasis is essential for speech processing areas, are pure voice)
- 2010-05-14 16:20:18下载
- 积分:1
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rpca
rcpa算法matlab程序
有意者下吧(rcpa algorithm Matlab procedures Interested parties are you)
- 2006-11-15 15:14:01下载
- 积分:1