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example4_6
:滤波
fs=400 采样频率,必须大于两倍基带信号最高频率
ts=1/fs 采样时间间隔
T=5 时间窗大小
t=0:ts:T (hf1=zeros(1,N)
hf1(f<=B1&f>=-B1)=1
y1=hf1.*fftshift(y)
figure
subplot(211)
plot(f,abs(fftshift(y))/N,f,hf1, r-- )
axis([-fs/2,fs/2,0,1.2])
title( 原信号频谱 )
xlabel( f /Hz )
subplot(212)
plot(f,abs(y1)/N)
title( 低通滤波,截止频率90Hz )
xlabel( f /Hz ))
- 2010-05-25 20:58:05下载
- 积分:1
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charu
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- 积分:1
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有关友元函数,对于初学者是一个非常不错参考例子(friend
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- 2009-11-30 19:36:03下载
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指纹识别源码---matlab版--附图指纹图像(Fingerprint identification source code--- matlab version- attached fingerprint image)
- 2008-01-09 12:34:24下载
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LTEdetail
LTE的详细讲解,对于OFDM等进行了讲解,对于LTE初学者有很大的帮助。(LTE detailed explanations, for OFDM, etc. were explained, the LTE is very helpful for beginners.)
- 2010-08-19 22:12:51下载
- 积分:1
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20100503
说明: 本文件包含了MATLAB语言常用算法程序,可为初学者提供有效快捷的学习通道。(This document contains the MATLAB language commonly used algorithm program for beginners to learn to provide effective and efficient channel.)
- 2010-05-04 16:32:43下载
- 积分:1
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Tabbar1.17_cn
类似与wndtars的国产软件,功能独特(similar wndtars with the homemade software, a unique function)
- 2007-06-17 13:44:21下载
- 积分:1
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gene
说明: 主要是基因识别的 matlab程序 一种全新的算法(Gene identification is mainly a new algorithm matlab program)
- 2011-04-11 20:42:14下载
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FFT
此代码是用MATLAB进行对数据做FFT变换(This code is done using MATLAB FFT transform data)
- 2014-05-05 20:47:23下载
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yangxuanfenjie1
计算超声射频数据的实用程序,主要对数据进行滤波操作,进行频谱分析。(Utility calculation ultrasound radiofrequency data, data filtering, spectrum analysis.)
- 2013-03-17 20:53:24下载
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