1

The basics

1.1 CHAPTER PREVIEW

In this first chapter you will be introduced to the basic principles of digital signal processing (DSP). We will look at how digital signal processing differs from the more conventional analogue signal processing and also at its many advantages. Some simple digital processing systems will be described and analysed. The main aim of this chapter is to set the scene and give a feel for what digital signal processing is all about – most of the topics mentioned will be revisited, and dealt with in more detail, in other chapters.

1.2 ANALOGUE SIGNAL PROCESSING

You are probably very familiar with analogue signal processing. Some obvious examples of this type of processing are amplification, rectification and filtering. ...

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