yheast 发表于 2009-6-22 19:03

fft analysis

本帖最后由 yjhou 于 2011-3-23 09:22 编辑

fft analysis本文首先介绍了FFT的定义及计算公式。其次介绍了如何使用MATLAB进行FFT计算，并给出了具体的实例。

hitbuyi 发表于 2011-1-6 08:37

和MATLAB有关吗？

thmoasmary 发表于 2011-1-27 10:32

多少阶的？？？

流水simol 发表于 2011-3-22 19:50

好东西啊,谢谢楼主

yjhou 发表于 2011-3-23 09:17

建议楼主在发资料的时候简要介绍一下资料的内容，这样大家就都有的放矢了。

zane2662200 发表于 2011-5-7 22:32

找了好久的东西啊，支持楼主，哈哈

zane2662200 发表于 2011-5-7 22:35

找了好久的东西啊，支持楼主，哈哈

2010happy 发表于 2011-5-27 14:28

辛苦楼主了，谢谢1

lanjeo 发表于 2011-5-30 13:40

不错的东西。收下了。

yxc870324 发表于 2011-6-17 14:11

下载了，还不错

yangfei810902 发表于 2011-6-25 18:04

谢谢楼主了

xiaoyu65 发表于 2011-7-1 10:21

University of Rhode Island Department of Electrical and Computer Engineering
ELE 436: Communication Systems
FFT Tutorial
1 Getting to Know the FFT
What is the FFT? FFT = Fast Fourier Transform. The FFT is a faster version of the Discrete
Fourier Transform (DFT). The FFT utilizes some clever algorithms to do the same thing as the
DTF, but in much less time.
Ok, but what is the DFT? The DFT is extremely important in the area of frequency (spectrum)
analysis because it takes a discrete signal in the time domain and transforms that signal into its
discrete frequency domain representation. Without a discrete-time to discrete-frequency transform
we would not be able to compute the Fourier transform with a microprocessor or DSP based system.
It is the speed and discrete nature of the FFT that allows us to analyze a signal's spectrum with
Matlab or in real-time on the SR770

yzc2 发表于 2011-7-12 08:39

下载了，看了感觉还行，不是特别好。

storm_good 发表于 2011-7-13 11:34

最好介绍一下哦，呵呵

Zeus 发表于 2011-9-8 14:13

感谢提供如此重要的资料啊

henxing1983XD 发表于 2011-9-12 15:04

多谢楼主的无私奉献哦

vacamvp007 发表于 2011-12-27 16:13

感谢您的分享
虽然提供档案是英文
但还是谢谢您

bimuKiko 发表于 2012-2-14 20:11

好东西啊，谢谢楼主！

wybtc99 发表于 2012-2-22 20:22

学习了，谢谢lz

nolimi 发表于 2012-5-13 17:53

谢谢楼主了 ，我都快没分了。希望有用
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