1、 IEC 61937-3 Edition 3.1 2020-09 CONSOLIDATED VERSION INTERNATIONAL STANDARD Digital audio Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 Part 3:Non-linear PCM bitstreams according to the AC-3 and enhanced AC-3 formats IEC 61937-3:2017-07+AMD1:2020-09 CSV(en)colourinside TH
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9、rminology entries in English and French extracted from the Terms and definitions clause of IEC publications issued between 2002 and 2015.Some entries have been collected from earlier publications of IEC TC 37,77,86 and CISPR.INTERNATIONAL STANDARD Digital audio Interface for non-linear PCM encoded a
10、udio bitstreams applying IEC 60958 Part 3:Non-linear PCM bitstreams according to the AC-3 and enhanced AC-3 formats INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.160.30 ISBN 978-2-8322-8910-5 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained
11、 this publication from an authorized distributor.IEC 61937-3 Edition 3.1 2020-09 CONSOLIDATED VERSION colourinside IEC 61937-3 Edition 3.1 2020-09 CONSOLIDATED VERSION REDLINE VERSION Digital audio Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 Part 3:Non-linear PCM bitstre
12、ams according to the AC-3 and enhanced AC-3 formats IEC 61937-3:2017-07+AMD1:2020-09 CSV(en)colourinside 2 IEC 61937-3:2017+AMD1:2020 CSV IEC 2020 CONTENTS FOREWORD.3 1 Scope.6 2 Normative references.6 3 Terms,definitions and abbreviated terms.6 3.7 Abbreviated terms.7 4 Mapping of the audio bitstre
13、am on to IEC 61937-1.7 4.1 General.7 4.2 AC-3 and enhanced AC-3 burst-info.7 5 Format of AC-3 and enhanced AC-3 data-bursts.8 5.1 General.8 5.2 Pause data-burst.8 5.3 Audio data-bursts.8 5.3.1 AC-3 data.8 5.3.2 Latency of AC-3 decoding.9 5.3.3 Enhanced AC-3 data.10 5.3.4 Latency of the enhanced AC-3
14、 decoder.12 Bibliography.14 Figure 1 AC-3 data-burst,with reference point R.8 Figure 2 Latency of AC-3 decoding.9 Figure 3 Enhanced AC-3 data-burst.11 Figure 4 Latency of enhanced AC-3 decoding.12 Table 1 Fields of burst-info.7 Table 2 Repetition period of the pause data-bursts.8 Table 3 Data-type-d
15、ependent information when data-type bits 0-4=1.9 Table 4 Data-type-dependent information when data-type bits 0-4=21 and data-type bits 5-6=0.11 Table 5 Maximum enhanced AC-3 burst-payload size and bitstream data rate per sampling frequency and IEC 60958 frame rate.12 IEC 61937-3:2017+AMD1:2020 CSV 3
16、 IEC 2020 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ DIGITAL AUDIO INTERFACE FOR NON-LINEAR PCM ENCODED AUDIO BITSTREAMS APPLYING IEC 60958 Part 3:Non-linear PCM bitstreams according to the AC-3 and enhanced AC-3 formats FOREWORD 1)The International Electrotechnical 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 stand
