1、 IEC 61937-6 Edition 2.1 2014-01 CONSOLIDATED VERSION VERSION CONSOLIDE Digital audio Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 Part 6: Non-linear PCM bitstreams according to the MPEG-2 AAC and MPEG-4 AAC formats Audionumrique Interface pour les flux de bits audio coda
2、ge MIC non linaire conformment lIEC 60958 Partie 6: Flux de bits MIC non linaire selon les formats MPEG-2 AAC et MPEG-4 AAC IEC61937-6:2006-01+AMD1:2014-01CSV(EN-FR) colourinsideTHIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2014 IEC, Geneva, Switzerland All rights reserved. Unless otherwise spec
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20、IEC 61937-6 Edition 2.1 2014-01 CONSOLIDATED VERSION VERSION CONSOLIDE Digital audio Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 Part 6: Non-linear PCM bitstreams according to the MPEG-2 AAC and MPEG-4 AAC formats Audionumrique Interface pour les flux de bits audio codag
21、e MIC non linaire conformment lIEC 60958 Partie 6: Flux de bits MIC non linaire selon les formats MPEG-2 AAC et MPEG-4 AAC INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 33.160.60; 35.040 ISBN 978-2-8322-1372-8 Registered trademark of the International Elect
22、rotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colourinsideIEC 61937-6 Edition
23、2.1 2014-01 REDLINE VERSION VERSION REDLINE Digital audio Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 Part 6: Non-linear PCM bitstreams according to the MPEG-2 AAC and MPEG-4 AAC formats Audionumrique Interface pour les flux de bits audio codage MIC non linaire conformme
24、nt lIEC 60958 Partie 6: Flux de bits MIC non linaire selon les formats MPEG-2 AAC et MPEG-4 AAC IEC61937-6:2006-01+AMD1:2014-01CSV(EN-FR) colourinside 2 61937-6 IEC:2006+A1:2014 CONTENTS FOREWORD . 4 INTRODUCTION TO AMENDMENT 1 . 6 1 Scope . 7 2 Normative references . 7 3 Terms, definitions, abbrevi
25、ations and presentation convention 7 3.1 Terms and definitions . 7 3.2 Abbreviations 8 3.3 Presentation convention 8 4 Mapping of the audio bitstream on to IEC 61937 8 4.1 MPEG-2 AAC burst-info . 8 4.2 MPEG-4 AAC burst-info . 9 5 Format of MPEG-2 AAC and MPEG-4 AAC data-bursts 10 5.1 Pause data-burs
26、t . 10 5.2 Audio data-bursts 10 Figure 1 MPEG-2 AAC data-burst 11 Figure 2 Latency of MPEG-2 AAC decoding . 12 Figure 3 MPEG-2 AAC half-rate low sampling frequency data-burst . 12 Figure 4 Latency of MPEG-2 AAC half-rate low sampling frequency decoding 14 Figure 5 MPEG-2 AAC quarter-rate low samplin
27、g frequency data-burst 15 Figure 6 Latency of MPEG-2 AAC quarter-rate low sampling frequency decoding 16 Figure 7 MPEG-4 AAC data-burst 16 Figure 8 Latency of MPEG-4 AAC decoding . 18 Figure 9 MPEG-4 AAC half-rate low sampling frequency data-burst . 18 Figure 10 Latency of MPEG-4 AAC half-rate low s
28、ampling frequency decoding 20 Figure 11 MPEG-4 AAC quarter-rate low sampling frequency data-burst 20 Figure 12 Latency of MPEG-4 AAC quarter-rate low sampling frequency decoding 22 Figure 13 MPEG-4 AAC double-rate high sampling frequency data-burst . 22 Figure 14 Latency of MPEG-4 AAC double-rate hi
29、gh sampling frequency decoding 23 Table 1 Fields of burst-info (data-type=7) 9 Table 2 Fields of burst-info (data-type=19) . 9 Table 3 Fields of burst-info (data-type=20) . 9 Table 4 Repetition period of pause data-bursts 10 Table 5 Repetition period of pause data-bursts 10 Table 6 Data-type-depende
30、nt information for data-type MPEG-2 AAC 11 Table 7 Data-type-dependent information for data-type MPEG-2 AAC half-rate low sampling frequency. 13 Table 8 Data-type-dependent information for data-type MPEG-2 AAC quarter-rate low sampling frequency . 15 61937-6 IEC:2006+A1:2014 3 Table 9 Data-type-depe
31、ndent information for data-type MPEG-4 AAC 17 Table 10 Data-type-dependent information for data-type MPEG-4 AAC half-rate low sampling frequency. 19 Table 11 Data-type-dependent information for data-type MPEG-4 AAC quarter-rate low sampling frequency . 21 Table 12 Data-type-dependent information for
32、 data-type MPEG-4 AAC double-rate high sampling frequency 23 4 61937-6 IEC:2006+A1:2014 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ DIGITAL AUDIO INTERFACE FOR NON-LINEAR PCM ENCODED AUDIO BITSTREAMS APPLYING IEC 60958 Part 6: Non-linear PCM bitstreams according to the MPEG-2 AAC and MPEG-4 AAC form
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43、ibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. This Consolidated version of IEC 61937-6 bears the edition number 2.1. It consists of the second edition (2006-01) documents
44、 100/942/CDV and 100/1043A/RVC and its amendment 1 (2014-01) documents 100/2052/CDV and 100/2117/RVC. The technical content is identical to the base edition and its amendment. In this Redline version, a vertical line in the margin shows where the technical content is modified by amendment 1. Additio
45、ns and deletions are displayed in red, with deletions being struck through. A separate Final version with all changes accepted is available in this publication. This publication has been prepared for user convenience. 61937-6 IEC:2006+A1:2014 5 International Standard IEC 61937-6 has been prepared by
46、 technical area 4: Digital systems interfaces, of IEC technical committee 100: Audio, video and multimedia systems and equipment. This edition contains the following significant technical changes with respect to the previous edition: a) addition of data-type for MPEG2 AAC low sampling frequency; b)
47、addition of data-type for MPEG-4 AAC. The French version of this standard has not been voted upon. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. IEC 61937 consists of the following parts under the general title Digital audio Interface for non-linear PCM encoded
48、 audio bitstreams applying IEC 60958: Part 1: General Part 2: Burst-info Part 3: Non-linear bitstreams according to the AC-3 format Part 4: Non-linear PCM bitstreams according to the MPEG audio formats Part 5: Non-linear PCM bitstreams according to the DTS (Digital Theater Systems) format(s) Part 6:
49、 Non-linear PCM bitstreams according to the MPEG-2 AAC and MPEG-4 AAC formats Part 7: Non-linear PCM bitstreams according to the ATRAC, ATRAC2/3 and ATRAC-X formats The committee has decided that the contents of the base publication and its amendment will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch
