Sampling Theorem
English Definition
a signal $ x(t) $ can be uniquely recovered from its samples if the samples within $ x(nT) $, where n goes from $ (-\infty,\infty) $, and T satisfies the nyquist rate, or $ T < \frac{1}{2}\frac{2\pi}{\omega_m} $
a signal $ x(t) $ can be uniquely recovered from its samples if the samples within $ x(nT) $, where n goes from $ (-\infty,\infty) $, and T satisfies the nyquist rate, or $ T < \frac{1}{2}\frac{2\pi}{\omega_m} $