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Designing Audio Effect Plug-Ins in C++
book

Designing Audio Effect Plug-Ins in C++

by Will Pirkle
November 2012
Intermediate to advanced content levelIntermediate to advanced
535 pages
12h 28m
English
Focal Press
Content preview from Designing Audio Effect Plug-Ins in C++

CHAPTER 6

Audio Filter Designs: IIR Filters

It's time to put the theory into practice and make some audio filters and equalizers (EQs). You know that the coefficients of a filter determine its frequency response and other characteristics. But how do you find the coefficients? There are two fundamental ways to find the coefficients of the infinite impulse response (IIR) filter:

•  Direct z-plane design

•  Analog filter to digital filter conversion

This chapter uses the following filter naming conventions:

•  LPF: Low-pass filter

•  HPF: High-pass filter

•  BPF: Band-pass filter

•  BSF: Band-stop filter

6.1 Direct z-Plane Design

In this first category of design techniques, you manipulate the poles and zeros directly in the z-plane to create the ...

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Publisher Resources

ISBN: 9780240825151