Introduction To Digital Signal Processing

56 V (co)= J v (t)e-jun d t. [1] 0 890193 .11 ° Fig.1. Low-pass filter 00 INTRODUCTION TO DIGITAL SIGNAL PROCESSING by Brian P. McArdle Digital circuits are usually considered to be easier to understand than analogue ones because they consist of logic gates that can be explained with Boolean algebra. All such circuits may be reduced to a combination of AND, OR and INVERTER (NOT) operations. But from the point of signals, the purpose of digital circuits is to process digital signals and consequently the important topic called Digital Signal Processing has become an essential course in the training of engineers and technicians. The purpose of this article is to explain the differences and similarities between the techniques used to analyse analogue and digital signals. It is only a basic introduction and readers who require a detailed study should consult the many textbooks on the subject. Analogue signal processing Before considering digital signals, a review of the techniques use...