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Convergence in Broadcast and Communications Media by John Watkinson

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3 Filters and transforms

 

 

The various chapters of this book concentrate on some specific subjects, but in all of these some common principles or processes arise. The most important of these is filtering, and its parallel topic of transforms. Filters and transforms are inseparable from this technology. They are relevant to sampling, displays, recording, transmission and compression systems.

3.1 Introduction

In convergent systems it is very important to remember that the valuable commodity is information. For practical reasons the way information is represented may have to be changed a number of times during its journey. If accuracy or realism is a goal these changes must be well engineered. In the course of this book we shall explore changes ...

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