ISO/IEC 11172-3: Information technology–Coding of moving pictures and associated audio for digital storage media at up to about 1.5 Mbit/s Part 3: Audio [First edition]

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INTERNATIONAL STANDARD

ISO/IEC 11172-3 First edition 1993-08-01

Information technology - Coding of moving pictures and associated audio for digital storage media at up to about I,5 Mbit/s Part 3: Audio Technologies de /‘information - Codage de /‘image animee et du son associ6 pour /es supports de stockage num&ique jusqu’B environ 1,5 Mbit/.. Partie 3: Audio

ISO/IEC

Reference number 11172-3:1993(E)

ISOAEC 11172-3: 1993 (E)

Contents

.

..............................................................................................

Introduction..

Section

Page

1: General ........................................................................................

Scope..

1.2

Normative

2:

1

.............................................................................................

1.1

Section

1

references..

Technical

1

..........................................................................

elements..

2

........................................................................

......................................................................................

2.1

Definitions.

2.2

Symbols

and abbreviations..

2.3

Method

of

2.4

Requirements..

describing

.2

10

................................................................

bitstream

syntax ....................................................

12

14

..................................................................................

Annexes

38

.......................................................................................

A

Diagrams..

B

Tables ...........................................................................................

C

The encoding

process .........................................................................

66

D

Psychoacoustic

models ......................................................................

. 09

E

Bit

sensitivity

to

.45

140

errors ......................................................................

0 ISO/IEC 1993 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. ISO/IEC Copyright Printed in Switzerland.

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Office

l

Case Postale 56

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Cl1 1211 Genkve 20

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Switzerland

0 ISO/IEC

ISOAEC 11172-3: 1993 (E)

F

Error

concealment..

G

Joint stereo coding .........................................................................

H

List

of

patent

..........................................................................

holders..

......................................................................

,142

..14 3

,147

.. .

111

0 ISO/IEC

ISOAEC 11172-3:1993(E)

Foreword IS0 (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of IS0 or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. IS0 and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with IS0 and IEC, also take part in the work. In the field of information technology, IS0 and IEC have established a joint technical committee, ISO/IEC JTC 1. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. International Standard ISO/IEC 11172-3 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Sub-Committee SC 29, Coded representation of audio, picture, multimedia and hypermedia informa tion. ISO/IEC 11172 consists of the following parts, under the general title Information technology - Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s: -

Part 1: Systems

-

Part 2: Video

-

Part 3: Audio

-

Part 4: Compliance

testing

Annexes A and B form an integral part of this part of ISO/IEC nexes C, D, E, F, G and H are for information only.

11172. An-

ISOAEC 11172-3: 1993 (E)

0 ISOAEC

Introduction Note: Readers interested in an overview of MPEG Audio should read this Introduction and then proceed to