how to convert time domain curve to frequency domain?

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

[KSSV]

Read about fft.

Answer 1

[Rahul Narendra Shanbhag]

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

[Bishoy Iskandar]

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

[Ziad]

It uses Fourier transform, it's a mathematical method to handle functions, you can google it