Digital Sound Processing
for Music & Multimedia
Andy Hunt & Ross Kirk
CHAPTER 3
Digital Audio
Chapter 3 describes how sound can be converted into a digital (numeric) form by the process known as sampling. The links below provide further explanation, a range of examples and web-based tutorials and articles on this subject.
3.1 Preparation: frequency translation
An animated
demo (with sound) of Fourier Synthesis
and sinewave superposition.
Notes on
modulation
. (and from a
telecommunications
perspective).
3.2 The sampling process
Basics of Digital Recording
Short introduction to the
Nyquist Theorem.
A set of lecture slides describing
analogue-to-digital conversion
.
3.3 Pulse Code Modulation (PCM) systems
Tutorial on
Analogue-to-Digital conversion
and
another
.
The
Modulation Tutorial
(with reference to PCM).
The
Binary Homepage!
(lots of info on binary / hex & number systems).
Time Division Multiplexing
(a definition).
3.4 Characteristics of digital audio systems
Differential Pulse Code Modulation
and another
page of links.
Delta Sigma Modulation
(short definition).
Dynamic range and its relationship to number of bits.
3.5 Synthetic audio systems
Wavetable synthesis and frequency modulation (FM)
How do synthesisers work?
Unit Generators and MIDAS are described in
chapter 10
.
3.6 Summary
Overview of
Digital Audio Recording.
Return to '
Supporting Information for Readers
'.
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'Digital Sound Processing' Home Page
.