Howtosignalprocessing
What are real signals?
A real signal at any given time takes its value in the set of real numbers, and a complex signal takes its value in the set of complex numbers.
What is an even signal?
Even Signal:
A signal is referred to as an even if it is identical to its time-reversed counterparts; x(t) = x(-t).
What is conjugate symmetry?
Conjugate symmetry is an entirely new approach to symmetric Boolean functions that can be used to extend existing methods for handling symmetric functions to a much wider class of functions. These are functions that currently appear to have no symmetries of any kind. Conjugate symmetries occur widely in practice.
