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how to write a code that will calculate the Fourier Transform of a signal

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Samantha Ryan-Wheeler 2021-4-13

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https://ww2.mathworks.cn/matlabcentral/answers/801391-how-to-write-a-code-that-will-calculate-the-fourier-transform-of-a-signal

回答： Abhishek Gupta ，2021-4-16

I need help writting a code that can open and read a given file, that can calculate the fourier transform of a signal. The code also needs to be able to plot that FT and put only the positive values of the frequency. Any idea of how I could start this?

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Jan 2021-4-13

Start with "open and read a file". It depends on the file format, how this must be done. So please explain, what kind of file you mean.

For the Fourier transformation simply call fft().

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Abhishek Gupta 2021-4-16

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Hi,

Referring to the following documentation link, which might help you in achieving the task: -

https://www.mathworks.com/help/matlab/ref/fft.html

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MATLAB Mathematics Fourier Analysis and Filtering

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