Aliasing In signal processing aliasingis aneffectthat causes different signals to become un-readable when sampled. It also difficult to reconstruct the original signal from samples.Image Frequency: After mixing of two frequencies in heterodyning process a new frequency of signal arrives this is called as image frequency.Quantization: Quantizationis the process of converting a continuous range of values into a finite range of discreet values. This is a function of analog-to-digital converters, which create a series of digital values to represent the original analog signal.