Small Signal Audio Design, 3rd Edition

CHAPTER 6

Filters

Introduction

Analogue filter design is an enormous subject, and it is of course quite impossible to cover even its audio aspects in a single chapter. A much, much more detailed account is given in my book The Design of Active Crossovers, which gives practical examples of just about every filter type you can think of. [1] Get the second edition which is much more comprehensive. There are several standard textbooks on filter theory [2] [3] [4], and there would be no point in trying to create another one here. This chapter instead gives information on audio applications not found in the standard textbooks.

Filter design is at the root highly mathematical, and it is no accident that all of the common filter characteristics such ...