IEC 61937-11-2010 Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 11 MPEG-4 AAC and its extensions in LATM LOAS《.pdf
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1、 IEC 61937-11 Edition 1.0 2010-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Digital audio Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 Part 11: MPEG-4 AAC and its extensions in LATM/LOAS Audionumrique Interface pour les flux de bits audio codage MIC non linaire conformm
2、ent la CEI 60958 Partie 11: MPEG-4 AAC et ses extensions en LATM/LOAS IEC 61937-11:2010 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2010 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any mea
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6、tez le Comit national de la CEI de votre pays de rsidence. IEC Central Office 3, rue de Varemb CH-1211 Geneva 20 Switzerland Email: inmailiec.ch Web: www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes Internatio
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15、us de 20 000 termes et dfinitions en anglais et en franais, ainsi que les termes quivalents dans les langues additionnelles. Egalement appel Vocabulaire Electrotechnique International en ligne. Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm Si vous dsirez nous donner des commenta
16、ires sur cette publication ou si vous avez des questions, visitez le FAQ du Service clients ou contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 61937-11 Edition 1.0 2010-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Digital audio Interface for non-linear PCM encoded
17、audio bitstreams applying IEC 60958 Part 11: MPEG-4 AAC and its extensions in LATM/LOAS Audionumrique Interface pour les flux de bits audio codage MIC non linaire conformment la CEI 60958 Partie 11: MPEG-4 AAC et ses extensions en LATM/LOAS INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTR
18、OTECHNIQUE INTERNATIONALE P ICS 33.160.30; 33.170 PRICE CODE CODE PRIX ISBN 978-2-88912-321-6 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale 2 61937-11 IEC:2010 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope . 6 2 N
19、ormative references . 6 3 Terms, definitions and abbreviations 6 3.1 Terms and definitions 6 3.2 Abbreviations 8 4 Mapping of the audio bit stream on to IEC 61937-1 8 4.1 General . 8 4.2 Burst-info for MPEG-4 AAC and its extensions in LATM/LOAS 8 5 Format of data-burst for MPEG-4 AAC and its extensi
20、ons in LATM/LOAS . 9 5.1 General . 9 5.2 Pause data-bursts for MPEG-4 AAC and its extensions in LATM/LOAS . 9 5.3 Audio data-bursts 10 5.3.1 MPEG-4 AAC and its extensions in LATM/LOAS 10 5.3.2 LATM/LOAS framing 12 5.3.3 Latency . 12 Annex A (informative) Calculation of delay and data-burst repetitio
21、n rates guidelines . 14 Bibliography 16 Figure 1 Data-burst structure . 10 Figure 2 Latency diagram for burst reception and decoding . 13 Table 1 Values for data-type and sub-data-type . 9 Table 2 Repetition period of pause data-bursts 9 Table 3 Data-type-dependent information 11 Table A.1 Examples
22、Calculation of delay and data-burst repetition rates . 14 61937-11 IEC:2010 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ DIGITAL AUDIO INTERFACE FOR NON-LINEAR PCM ENCODED AUDIO BITSTREAMS APPLYING IEC 60958 Part 11: MPEG-4 AAC and its extensions in LATM/LOAS FOREWORD 1) The International Electrote
23、chnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To t
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