how to convert time domain curve to frequency domain?

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veeresh g 2020-6-12

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https://ww2.mathworks.cn/matlabcentral/answers/547116-how-to-convert-time-domain-curve-to-frequency-domain

编辑： Ziad 2022-11-18

采纳的回答： Rahul Narendra Shanbhag

can any one explain how to convert that time domain respsonse shown in the figure to frequency domain curve?

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KSSV 2020-6-12

Read about fft.

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Rahul Narendra Shanbhag 2020-6-19

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https://ww2.mathworks.cn/matlabcentral/answers/547116-how-to-convert-time-domain-curve-to-frequency-domain#answer_454057

To convert a time domain signal into frequency domain, one must use the Fourier transform to do so. MATLAB has a function fft which is a Fast Fourier Transform algorithm designed to implement the Fourier Transform on digital signals.

Please go through this documentation to know more:

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

Hope this helps

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Bishoy Iskandar 2022-7-21

I used the fft in Matlab and it works but how does it work ? i am trying to look in the internet but all they say about fft is that it converts time domain signal into frequency domain... but how ? they didn't mention..

Any idea will be helpful...

Thanks in regards