Why do we need Fourier transform?

Related questions

1. What is need for FFT?
2. What is 2d Fourier transform?
3. What is difference between Fourier series and Fourier transform?
4. What is FFT shift?
5. What is the use of Dtft?
6. What is Fftshift?
7. What is the need of FFT?
8. What is fft2 Matlab?
9. What is the Fourier transform of an image?
10. Why do we use transforms?

Tags

1. #fourier
2. #range
3. #signal
4. #relevance
5. #applications
6. #contains
7. #physics
8. #present
9. #relative
10. #frequencies
11. #certain
12. #filter
13. #amplitude
14. #first
15. #tells
16. #transform
17. #where
18. #amplitudes