Page 25 - 1. DSP_1._Neat

Time Invariant Systems

 If the output of the system
drawn in case-1 is of the same
expression as the output of the
system in case-2; the defined
system is said to be time-
invariant:

w(n) = y(n-n0)

 Otherwise, the system is said
to be time-varying:

w(n)  y(n-n0)