search:fourier transform matlab data相關網頁資料

- en.wikipedia.org
  
  Fast Fourier transform - Wikipedia, the free encyclopedia
  
  A fast Fourier transform (FFT) is an algorithm to compute the discrete Fourier transform (DFT) and its inverse. Fourier analysis converts time (or space) to frequency and vice versa; an FFT rapidly computes such transformations by factorizing the DFT matr
  
  2025-10-04
  
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- texas.math.ttu.edu
  
  Mathematics 5342 Discrete Fourier Transform
  
  Lets consider an example taken from [3]. Let f(t)= ‰ 12exp(¡3t);t‚0 0;t3 and let T=3. Do the following in Matlab N=128; t=linspace(0,3,N); f=12*exp(-3*t);
  
  2025-10-01
  
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Fast Fourier Transform (FFT) - MATLAB & Simulink - MathWorks

日期：2025-10-03

Direct application of the definition of the DFT (see Discrete Fourier Transform ( DFT)) to a data vector of length n requires n multiplications and n additions—a ......

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Fourier Analysis and Filtering - MATLAB & Simulink - MathWorks

日期：2025-10-05

Fourier transforms, convolution, digital filtering. ... run-time algorithm tuning control. ifft, Inverse fast Fourier transform. ifft2, 2-D inverse fast Fourier transform....

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Using FFT - MATLAB & Simulink Example - MathWorks

日期：2025-10-02

The fundamental tool of signal processing is the FFT, or fast Finite Fourier Transform. To take the FFT of the sunspot data type the following. The first component ......

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how to use FFT in matlab using imported data in time domain excel ...

日期：2025-10-02

12 Aug 2012 ... Your data will be a Nx2 matrix in MATLAB with the first column the time data and the second column the data you want to Fourier transform....

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How to Do a Fourier Transform in Matlab | Matlab Geeks

日期：2025-10-05

9 Dec 2010 ... The Discrete Fourier Transform (DFT) transforms discrete data from the sample domain to the frequency domain. The Fast Fourier Transform ......

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Fast Fourier Transform (FFT) - MATLAB & Simulink - MathWorks ...

日期：2025-09-28

Direct application of the definition of the DFT (see Discrete Fourier Transform ( DFT)) to a data vector of length n requires n multiplications and n additions—a ......

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FFT of 100 data points - MATLAB Answers - MATLAB Central

日期：2025-10-02

24 Nov 2011 ... I have 100 data taken from 0 to 346.5 microseconds. the time interval for each data is 3.5 microseconds. I need to plot the FFT of this data....

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Fast Fourier Transform (FFT) - MathWorks Schweiz

日期：2025-09-30

Direct application of the definition of the DFT (see Discrete Fourier Transform ( DFT)) to a data vector of length n requires n multiplications and n additions—a ......

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