DTFT of Real Signals
The previous section established that the spectrum
of every real
signal
satisfies
![]() |
(3.16) |
I.e.,
![]() |
(3.17) |
In other terms, if a signal

- The real part is even, while the imaginary part is odd:
- The magnitude is even, while the phase is odd:
Next Section:
Real Even (or Odd) Signals