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 Equalizers & EQ - an Introduction

Level: Basic
Advanced
Professional
Original site content © 2001, 2002 V.Karazija/Audio Training Consultants Pty Ltd. All rights reserved. Code:
EQ 1
  Last updated 15 May 2002
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What is this module about?

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Synopsis
Equalisers, in their simplest domestic guise, are the familiar home stereo tone controls - simple circuits designed to balance sounds in the frequency domain. At home we try to obtain what we think is a realistic reproduction of the original sound recorded by the engineer. We fiddle with tone controls (i.e. "EQ the sound") because of inefficiencies in our equipment, poor room acoustics - or simply because our individual tastes in preferred frequency balance vary.

In the recording environment, a different type of professional equaliser allows the engineer to "EQ the sound" by controlling the tonal balance of sounds as they are being recorded or mixed.

Engineers use many types of signal processing to manipulate sounds (see our related module "Signal Processors) - but few are as basic to sound production as EQ. The engineer's experience, plus their knowledge of the nature of sound (see our related module "Sound for Sound Engineers") allows him or her to fine tune the frequency balance of complex sounds.

This module examines the different equaliser types used by the sound production industry and provides an insight into their practical applications.

 

Learning outcomes
By the end of this module, you should be able to
  • Learning Outcomes to be advised

 

Contents
Chapter 1 - What is equalisation?
  • Why is EQ necessary?
  • Fixed and variable EQ
  • Parameters affected by EQ devices

Chapter 2 - Tone controls and graphics

  • Working parameters
  • Shelving, peak/dip equalisers
  • Graphic equalisers

Chapter 3 - Parametrics

  • Working parameters
  • Semi- or quasi-parametric equalisers
  • Full control parametric equalisers

Chapter 4 - Working with EQ

  • Practical considerations
  • Phase problems
  • Harmonic distortion

 

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Original site content © 2001, 2002 V.Karazija/Audio Training Consultants Pty Ltd. All rights reserved.