Audio Processes

4 Frequency Domain Analysis

4.1	Introduction
4.2	Static and Average Sound Character
4.2.1	Spectral Form
4.2.2	Frequency Domain Analysis of Simple Waveform Shapes
4.2.3	Average Spectrum Analysis Examples
4.3	Dynamic Sound Character
4.3.1	Representing Three Dimensions
4.3.2	Simple Spectrogram Examples
4.3.3	More Complex Spectrogram Examples
4.4	Using Frequency Domain Information
4.5	Learning More

4.1 Introduction

The frequency domain describes a signal with respect to the frequencies and amplitudes of the sinusoidal partials of which it is composed. A range of techniques for examining the tonal characteristics of a sound are associated with frequency domain analysis, as will be described later in this chapter. These techniques help to inform the development of ...