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![MATLAB中的離散傅立葉轉換@ 有的沒的:: 隨意窩Xuite日誌]()
blog.xuite.netDTFT 和DFT 很類似，兩者都用來處理離散時間的訊號，只是前者產生一個角頻率的連續函數，而後者產生離散頻率的訊號，更 ... 若使用MATLAB，相關的指令也是fft。瀏覽：1385 -
![Fast Fourier transform - MATLAB fft - MathWorks]()
www.mathworks.comThis MATLAB function returns the discrete Fourier transform (DFT) of vector x, ... f = Fs/2*linspace(0,1,NFFT/2+1); % Plot single-sided amplitude spectrum. plot(f ...瀏覽：775
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日期：2024-04-29
The MATLAB® functions fft, fft2, and fftn (and their inverses ifft, ifft2, and ifftn, respectively) all use fast ......
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日期：2024-04-28
This MATLAB function returns the discrete Fourier transform (DFT) of vector x, computed with a fast ......
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日期：2024-04-23
Computing Fourier Series and Power Spectrum with MATLAB By Brian D. Storey 1. Introduction Fourierseriesprovidesanalternatewayofrepresentingdata:insteadofrepresent-ingthesignalamplitudeasafunctionoftime,werepresentthesignalbyhowmuch information is ......
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日期：2024-04-22
Power Spectrum in MATLAB Posted by Shannon Hilbert in Digital Signal Processing on 4-8-13 ... This is a consequence of the Fourier Transform, which says that a sinusoid at frequency, f, with amplitude, A, in the time domain will become a pair of peaks ......
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日期：2024-04-29
Fast Fourier Transform (FFT) is a technique frequently used in signal processing. A Fourier transform approximates any continuous function as the sum of periodic functions (sines and cosines). FFT does the same thing for discrete signals -- series of data...
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日期：2024-04-29
I have several suggestions and also want to point out that it is not quite fair to compare Altera's FFT to Matlab's FFT. First of all, Matlab's FFT implementation (the fft function) is actually a floating point DFT implementation- and we don't really have...
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日期：2024-04-22
Understanding FFT was never so easy!; Author: Grasshopper.iics; Updated: 20 Jan 2012; Section: Algorithms & Recipes; Chapter: General Programming; Updated: 20 Jan 2012 ... Points of Interest You can learn Matlab fundamentals from this source To ......
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日期：2024-04-24
These two functions are very useful, and I still use them all the time! Power of 2 The fft command within Matlab allows you to specify how many data points are in the transform. The Matlab documentation recommends that a power of 2 be used for optimal ......
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