Fill in the Blanks Nyquist ConditionOnline version This is a fill-in-the-blank exercise about sampling and the Nyquist condition. by Heather Holmes 1 frequencies twice Nyquist low highest original aliasing least digitized sampling The condition states that to adequately measure the in a signal , the frequency must be at the rate of the - frequency component of the signal . If the sampling rate is too , of the signal can occur . This means that the signal contains frequencies that are not in the signal .