Categorías

## Energy and power of a signal

$E_x = \sum_{n=-\infty}^{+\infty} \left| x\left[ n \right] \right|^2$
$P_x = \lim_{N\to\infty} \frac{1}{2N + 1} \sum_{n = -N}^{N} \left| x[n] \right|^2$