ISO/IEC INTERNATIONAL STANDARD 11172-4 First edition 1995-03-15 Information technology Coding of moving pictures and associated audio for digital storage media at up to about 1,5 Mbit/s Part 4: Compliance testing Technologies de I'information - Codage de I'image animée et du son 1.5Mbit/s- Partie 4:Essais de conformité EC Reference number ISO/IEC 11172-4:1995(E) Copyright Intermational Organization for Standardization Not for Resale ISO/IEC 11172-4: 1995 (E) Contents Page Foreword. .iii Introduction V Section 1: General 1.1 Scope 1.2 Normative references Section 2: Technical Telements 2.1 Definitions. 2.2 Symbols and abbreviations 11 2.3 Bitstream characteristics 14 2.4 Decoder characteristics. 2.5 Procedures to test bitstream compliance. 2.6 Procedures to test decoder compliance 29 Annexes A Definitionofaudiodecodertests. 3 1 B Descriptions of the ISO/IEC 11172 (MPEG) audio test bitstreams 32 @ISO/IEC1995 All rights reserved. Unless otherwise specified, 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 Office · Case Postale 56 · CH1211 Geneve 20 · Switzerland Printed in Switzerland. Copyright Intern: No reproduction or networking permited without license from IHS Not for Resale @ISO/IEC ISO/IEC 11172-4:1995 (E) Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for world-wide standardization. National Bodies that are members ofIsOandIECparticipateinthedevelopmentofInternationalStandardsthroughtechnicalcommittees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO 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 bodiescastingavote. - Part I: Systems - Part 2: Video 一 Part3: Audio -- Part 4: Compliance testing Annex A forms an integral part of this part of ISO/IEC 11172. Annex B is for information only. Copyrightlintemational Oorganizatin for Standardization ii No reproduction or netivorking permited without license from IHs Not for Resale