IEC 62379-2-2008 Common control interface for networked digital audio and video products - Part 2 Audio《网络数字音频和视频产品用通用控制接口.第2部分 音频》.pdf

《IEC 62379-2-2008 Common control interface for networked digital audio and video products - Part 2 Audio《网络数字音频和视频产品用通用控制接口.第2部分 音频》.pdf》由会员分享，可在线阅读，更多相关《IEC 62379-2-2008 Common control interface for networked digital audio and video products - Part 2 Audio《网络数字音频和视频产品用通用控制接口.第2部分 音频》.pdf（92页珍藏版）》请在麦多课文档分享上搜索。

1、 IEC 62379-2 Edition 1.0 2008-09 INTERNATIONAL STANDARD Common control interface for networked digital audio and video products Part 2: Audio IEC 62379-2:2008(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part o

2、f 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 either IEC or IECs member National Committee in the country of the requester. If you have any questions about IEC copyright

3、 or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for further information. IEC Central Office 3, rue de Varemb CH-1211 Geneva 20 Switzerland Email: inmailiec.ch Web: www.iec.ch About the IEC The Int

4、ernational Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Plea

5、se make sure that you have the latest edition, a corrigenda or an amendment might have been published. Catalogue of IEC publications: www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,). It also gives informatio

6、n on projects, withdrawn and replaced publications. IEC Just Published: www.iec.ch/online_news/justpub Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available on-line and also by email. Electropedia: www.electropedia.org The worlds l

7、eading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical Vocabulary online. Customer Service Centre: www.iec.ch/webstore/custser

8、v If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service Centre FAQ or contact us: Email: csciec.ch Tel.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 62379-2 Edition 1.0 2008-09 INTERNATIONAL STANDARD Common control interface for network

9、ed digital audio and video products Part 2: Audio INTERNATIONAL ELECTROTECHNICAL COMMISSION XC ICS 33.160.01 PRICE CODE ISBN 2-8318-9987-7 Registered trademark of the International Electrotechnical Commission 2 62379-2 IEC:2008(E) CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references .

10、7 3 Terms, definitions and abbreviations 7 3.1 Abbreviations 7 4 Audio format definitions8 4.1 Audio signal format definitions.8 4.1.1 Audio parameters 8 4.1.2 Audio signal formats9 4.2 Audio transport format definitions12 4.3 Audio metadata format definitions .12 5 MIB definitions for audio blocks1

11、3 5.1 General .13 5.2 Type definitions.13 5.2.1 Textual conventions.13 5.2.2 Sequences 15 5.3 Audio port and associated managed object type definitions .17 5.3.1 Generic port functionality.17 5.3.2 AES3 ancillary data .18 5.3.3 Phantom power .19 5.3.4 Audio locked to reference19 5.4 Other audio bloc

12、k and associated managed object type definitions20 5.4.1 Audio mixer blocks 20 5.4.2 Audio crosspoint blocks.23 5.4.3 Audio clip player blocks.26 5.4.4 Audio limiter blocks .29 5.4.5 Audio converter blocks 31 5.4.6 Audio level alarm blocks32 6 Status broadcasts.34 6.1 General .34 6.2 Type definition

13、s.34 6.2.1 Textual conventions.34 6.2.2 Sequences 34 6.3 Audio formats mapping34 6.3.1 audioFormatsMapTable .35 6.3.2 audioFormatsMapEntry35 6.3.3 afmNumber35 6.3.4 afmFormat.35 6.4 Page formats.35 6.4.1 Audio port page.35 6.4.2 AES3 ancillary data page 35 6.4.3 Audio mixer page.36 6.4.4 Audio cross

14、point page .36 6.4.5 Audio clip player page .37 6.4.6 Audio limiter page37 62379-2 IEC:2008(E) 3 6.4.7 Audio converter page 38 6.4.8 Audio level alarm page 38 6.5 Page groups39 6.5.1 audioPorts .39 6.5.2 standardAudioBlocks.39 6.5.3 audioAlarms.40 Annex A (informative) Machine-readable audio format

15、definitions 41 Annex B (informative) Machine-readable audio block definitions 56 Annex C (informative) Machine-readable status page group definitions74 Annex D (informative) Machine-readable status page MIB definitions 75 Annex E (informative) Worked examples77 Annex F (informative) Tree of example

16、audio formats 86 Figure 1 Audio port blocks .17 Figure 2 Audio mixer block.21 Figure 3 Audio crosspoint block .23 Figure 4 Audio clip player block .26 Figure 5 Audio limiter block29 Figure 6 Audio converter block.31 Figure 7 Audio level alarm block 32 Table 1 Managed objects for audio ports .17 Tabl

17、e 2 Managed objects for AES3 ancillary data 18 Table 3 Managed objects for phantom power .19 Table 4 Managed objects for audio locked .20 Table 5 Managed objects for audio mixer blocks21 Table 6 Managed objects for audio crosspoint blocks 23 Table 7 Managed objects for audio clip player blocks.27 Ta

18、ble 8 Managed objects for audio limiter blocks.30 Table 9 Managed objects for audio converter blocks31 Table 10 Managed objects for audio level alarm blocks33 Table 11 Managed objects for audio format mappings35 Table 12 Status entries for audio port page35 Table 13 Status entries for AES3 ancillary

19、 data page.36 Table 14 Status entries for audio mixer page .36 Table 15 Status entries for audio crosspoint page37 Table 16 Status entries for audio clip player page37 Table 17 Status entries for audio limiter page 38 Table 18 Status entries for audio converter page .38 Table 19 Status entries for a

20、udio level alarm page.39 4 62379-2 IEC:2008(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ COMMON CONTROL INTERFACE FOR NETWORKED DIGITAL AUDIO AND VIDEO PRODUCTS Part 2: Audio FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

21、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 this end and in addition to other activities, IEC publishes International Standards,

22、Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory

23、 work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organization

24、s. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of reco

25、mmendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by a

26、ny end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional pu

27、blication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publicatio

28、n. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or fo

29、r costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct a

30、pplication of this publication. 9) Attention is drawn to the possibility 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. International Standard IEC 62379-2 has been prepared techni

31、cal area 4: Digital system interfaces and protocols, of IEC technical committee 100: Audio, video and multimedia systems and equipment. The text of this standard is based on the following documents: FDIS Report on voting 100/1405/FDIS 100/1445/RVD Full information on the voting for the approval of t

32、his standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. 62379-2 IEC:2008(E) 5 The committee has decided that the contents of this publication will remain unchanged until the maintenance resul

33、t date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. 6 62379-

34、2 IEC:2008(E) INTRODUCTION IEC 62379 specifies the common control interface, a protocol for managing equipment which conveys audio and/or video across digital networks. This part of IEC 62379 specifies those aspects that are specific to audio equipment. An introduction to the common control interfac

35、e is given in IEC 62739-1. 62379-2 IEC:2008(E) 7 COMMON CONTROL INTERFACE FOR NETWORKED DIGITAL AUDIO AND VIDEO PRODUCTS Part 2: Audio 1 Scope This part of IEC 62379 specifies aspects of the common control interface of IEC 62379-1 that are specific to audio. 2 Normative references The following refe

36、renced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. AES3-2003, AES standard for digital audio Digital input-output inte

37、rfacing Serial transmission format for two-channel linearly represented digital audio data AES10-2003, AES recommended practice for digital audio engineering Serial multichannel audio digital interface (MADI) AES50-2005, AES standard for digital audio engineering High-resolution multi-channel audio

38、interconnection (HRMAI) IEC 62379-1:2007, Common control interface for networked audio and video products Part 1: General ITU-T Recommendation G.711, Pulse code modulation (PCM) of voice frequencies ITU-T Recommendation G.722, 7kHz audio-coding within 64 kbit/s ITU-T Recommendation J.41, Characteris

39、tics of equipment for the coding of analogue high quality sound programme signals for transmission on 384 kbit/s channels ITU-T Recommendation J.57, Transmission of digital studio quality sound signals over H1 channels 3 Terms, definitions and abbreviations For the purposes of this document, the ter

40、ms and definitions given in IEC 62379-1 apply along with the following abbreviations. 3.1 Abbreviations 3.1.1 pulse code modulation PCM 3.1.2 motion pictures expert group MPEG 8 62379-2 IEC:2008(E) 3.1.3 advanced audio coding AAC 4 Audio format definitions 4.1 Audio signal format definitions At any

41、point in the audio signal chain, the audio data will be in a particular format. For management purposes, the format shall be identified by an object identifier, either a “common control interface standard” object identifier defined in this standard or an object identifier defined elsewhere. NOTE Per

42、mitting audio format identifiers to be defined outside this standard allows use of proprietary formats within the standard protocol and also allows industry standard formats to emerge that may eventually be incorporated into future revisions of this standard. 4.1.1 Audio parameters 4.1.1.1 General T

43、he definitions in 4.1.2 make reference to parameters which provide additional information about the format. These parameters shall be mapped to sub-identifier values as specified in the other subclauses of 4.1.1. Any parameter may be unspecified. The sub-identifier values shall be appended to the ob

44、ject identifiers as additional arcs, in the order in which the parameters are listed in the relevant subclause of 4.1.2; except that if a parameter is unspecified and either it is the last parameter or all subsequent parameters are also unspecified, then it shall be omitted. NOTE For all parameters,

45、 “unspecified“ is coded as zero, so this rule ensures that the OID does not end with a zero arc. EXAMPLE: If the last two parameters are bit depth and sampling frequency, then 16-bit 48kHz would be coded as .16.48000, 16-bit (with sampling frequency unspecified) as .16, and 48kHz (with bit depth uns

46、pecified) as .0.48000. 4.1.1.2 Channel arrangement The sub-identifier for channel arrangement shall be a value of the following type: ChannelArrangement := INTEGER unspecified (0), discreteMono (1), stereo (2), jointStereo (3), surround (4), surroundWithDownmix (5) (unspecified surroundWithDownmix)

47、discreteMono shall indicate that each channel (if there is more than one) is a separate audio signal. stereo should only be used with an even number of channels, and shall indicate that each pair of channels (if there is more than one pair) is a separate stereo audio signal, with the first channel o

48、f the pair being the left channel. jointStereo should only be used with an even number of channels, and shall indicate that each pair of channels (if there is more than one pair) is a separate stereo audio signal, with the first channel of the pair being the M channel and the second the S channel. 6

49、2379-2 IEC:2008(E) 9 surround and surroundWithDownmix should only be used with 3 to 8 channels (inclusive), Each shall indicate that the first six channels contain left, right, centre, low frequency effects, left surround, and right surround respectively. surround shall indicate that the next two channels contain left and right channels (respectively) of a stereo signal suitable for matrix decoding. surroundWithDownmix sha