- #1

alwaystudent

- 1

- 0

$$

|{df(t)}/dt| \le 2AB\pi

$$

where A=sup$|f(t)|$ and B is Bandwidth f(t),

the question is:Is there a relationship for discrete function x[n] like this?

$$

|x[n] -x[n-1] | \le\ \mu\ W

$$

where

$$

X[k] = \sum\limits_{k = 0}^{N - 1} {x[n]{e^{ - j\frac{{2\pi }}{N}nk}}}

$$

is DFT for x[n] , X[k]=0 for k> W