An Introduction to Parametric Digital Filters and Oscillators
Chapter One
Introduction: Basis of Discrete
Signals and Digital Filters
The theory and practice of digital signal processing (DSP) are currently in a mature
stage. It is difficult to imagine any modern electronic system without wide application
of DSP and, in particular, linear time-invariant algorithms for filtering, equalization,
characteristic correction and so on.
The major goal of this chapter is to introduce the theoretical basis of discrete signals
and time-invariant digital systems to help readers more easily understand the main
text dedicated to time-variant systems and to minimize the necessity to consult other
texts while reading this book. This introduction provides a superficial overview of
DSP concepts: sampling and quantization; impulse and frequency responses; Fourier,
Laplace and z-transforms; system stability and causality and finite and infinite impulse
response (IIR) digital filters (DFs). For those familiar with DSP and related subjects,
this introduction will help refresh their knowledge. For those who are unfami ... read full excerpt from An Introduction to Parametric Digital Filters and Oscillators ebook
