Take the 2-minute tour ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

I understand what is meaning of Fourier transform over function that returns only real values — it can be thought of function taking time and returning real amplitude value of signal at that time, being transformed to function taking frequency and returning complex amplitude of given frequency, that denotes weighted sum of cosine and sine waves or phase-shifted cosine wave.

But what if original function returns not only real values, but also complex ones? I have troubles understanding the meaning of imaginary part when thinking about that function as signal representation. Is this somehow connected with polarization or other 2D waves? In case Fourier transform is applied to such "complex signal", what will be the meaning of transform result?

Can you please help me understand that?

share|improve this question

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.