ABSTRACT
The field of digital signal processing is an essential part of applied science and engineering since much of the information of our world is, today, being recorded in signals, and signals must be processed to facilitate the extraction of information. In order to implement digital processing, there is a need for an interface between the analog signal and the digital processor. In digitization, an analog signal is converted to digital i.e., from a continuous function of time, the analogue signal is converted to a function of a series of discrete numerical values. The process of digitization of continuous time signals involves the following steps: sampling; quantization; and coding. In the case of low sampling frequency, rapid changes in the original signal are not recorded, and the information contained in it is lost, resulting in degradation of the original signal. The problem is corrected by increasing the sampling frequency.
