how do i convert time domain signal to frequency domain signal?

I have a sensor data signal of lenth 4000*1.

It is time domain.

How can i convert it into frquency domain.

Any commands in MAtlab doing this conversion.

Please Help.

Answer 1

[Mohammad Abouali]

fft() is one

[Heartrin]

Hi,

Thanks for your comment.

So you say,

fft(myvalues) will give me the signal in frequency domain right?

[Guillaume]

If you don't even know what a Fast Fourier Transform is, why do you even want your signal in the frequency domain?

[Heartrin]

I knew what FFT is.

i was using transfer functions matrix methods to convert it.

just for clarification i want to make sure that this works correct.

[Mohammad Abouali]

Yes, FFT or Fast Fourier Transform converts the signal from the (usually) time domain to the frequency domain.

ifft() performs the inverse, i.e. moving from freq. domain to time domain (usually).