1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationCommon control interface fornetworked digital audio andvideo products Part 2: AudioBS EN 62379-2:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 07:40, Unco
2、ntrolled Copy, (c) BSINational forewordThis British Standard is the UK implementation of EN 62379-2:2009. It isidentical to IEC 62379-2:2008.The UK participation in its preparation was entrusted to Technical CommitteeEPL/100, Audio, video and multimedia systems and equipment.A list of organizations
3、represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. BSI 2010ISBN 978 0 580 59627 8ICS 33.160.01Compliance with a British Standard cannot con
4、fer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 January 2010Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 62379-2:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STAND
5、ARDS, 14/04/2010 07:40, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD EN 62379-2 NORME EUROPENNE EUROPISCHE NORM August 2009 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretar
6、iat: Avenue Marnix 17, B - 1000 Brussels 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 62379-2:2009 E ICS 33.160.01 English version Common control interface for networked digital audio and video products - Part 2: Audio (IE
7、C 62379-2:2008) Interface de commande commun destin aux produits audio et vido numriques connects en rseau - Partie 2: Audio (CEI 62379-2:2008) Gemeinsame Steuerschnittstelle fr netzwerkbetriebene digitale Audio- und Videogerte - Teil 2: Audio (IEC 62379-2:2008) This European Standard was approved b
8、y CENELEC on 2009-07-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national s
9、tandards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and
10、notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lith
11、uania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 62379-2:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 07:40, Uncontrolled Copy, (c) BSIEN 62379-2:2009 - 2 - Foreword The
12、 text of document 100/1405/FDIS, future edition 1 of IEC 62379-2, prepared by technical area 4, Digital system interfaces and protocols, of IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62379-2 on 2009-
13、07-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2010-04-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2012-07-01 Ann
14、ex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 62379-2:2008 was approved by CENELEC as a European Standard without any modification. _ BS EN 62379-2:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 07:40, Uncontrolled Copy, (c) B
15、SI- 3 - EN 62379-2:2009 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated
16、references, the latest edition of the referenced document (including any amendments) applies. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 62379-1 2007 Common control interface
17、for networked digital audio and video products - Part 1: General EN 62379-1 2007 AES3 2003 AES standard for digital audio engineering - Serial transmission format for two-channel linearly represented digital audio data - - AES10 2008 AES recommended practice for digital audio engineering - Serial Mu
18、ltichannel Audio Digital Interface (MADI) - - AES50 2005 AES standard for digital audio engineering - High-resolution multi-channel audio interconnection - - ITU-T Recommendation G.711 -1)Pulse code modulation (PCM) of voice frequencies - - ITU-T Recommendation G.722 -1)7 kHz audio-coding within 64
19、kbit/s - - ITU-T Recommendation J.41 -1)Characteristics of equipment for the coding of analogue high quality sound programme signals for transmission on 384 kbit/s channels - - ITU-T Recommendation J.57 -1) Transmission of digital studio quality sound signals over H1 channels - - 1)Undated reference
20、. BS EN 62379-2:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 07:40, Uncontrolled Copy, (c) BSI 2 62379-2 IEC:2008(E) CONTENTS INTRODUCTION.6 1 Scope.7 2 Normative references .7 3 Terms, definitions and abbreviations 7 3.1 Abbreviations 7 4 Audio format definitions8 4.1 Audio
21、 signal format definitions.8 4.1.1 Audio parameters 8 4.1.2 Audio signal formats9 4.2 Audio transport format definitions 12 4.3 Audio metadata format definitions .12 5 MIB definitions for audio blocks 13 5.1 General .13 5.2 Type definitions.13 5.2.1 Textual conventions.13 5.2.2 Sequences 15 5.3 Audi
22、o 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 reference 19 5.4 Other audio block and associated managed object type definitions20 5.4.1 Audio mixer blocks 20 5.4.2 Audio crossp
23、oint 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 definitions.34 6.2.1 Textual conventions.34 6.2.2 Sequences 34 6.3 Audio formats mapping34 6.3.1 audioForma
24、tsMapTable .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 crosspoint page .36 6.4.5 Audio clip player page .37 6.4.6 Audio limiter page37 BS EN 62379-2:2009Lic
25、ensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 07:40, Uncontrolled Copy, (c) BSI62379-2 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-re
26、adable audio format 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 (informati
27、ve) Tree of example 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
28、audio ports .17 Table 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
29、 player blocks.27 Table 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 entrie
30、s for AES3 ancillary 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
31、Status entries for audio level alarm page.39 BS EN 62379-2:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 07:40, Uncontrolled Copy, (c) BSI 6 62379-2 IEC:2008(E) INTRODUCTION IEC 62379 specifies the common control interface, a protocol for managing equipment which conveys audi
32、o 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 interface is given in IEC 62739-1. BS EN 62379-2:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 07:40, Uncontrolle
33、d Copy, (c) BSI62379-2 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 referenced docum
34、ents 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 interfacing Seri
35、al 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 interconnect
36、ion (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, Characteristics of equi
37、pment 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 terms and defin
38、itions 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 BS EN 62379-2:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 07:40, Uncontrolled Copy, (c) BSI 8 62379-2 IEC:2008
39、(E) 3.1.3 advanced audio coding AAC 4 Audio format definitions 4.1 Audio signal format definitions At any 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 interfac
40、e standard” object identifier defined in this standard or an object identifier defined elsewhere. NOTE Permitting 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 e
41、ventually be incorporated into future revisions of this standard. 4.1.1 Audio parameters 4.1.1.1 General The 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 su
42、bclauses of 4.1.1. Any parameter may be unspecified. The sub-identifier values shall be appended to the object 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 param
43、eter or all subsequent parameters are also unspecified, then it shall be omitted. NOTE For all parameters, “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
44、 be coded as .16.48000, 16-bit (with sampling frequency unspecified) as .16, and 48kHz (with bit depth unspecified) 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
45、(1), stereo (2), jointStereo (3), surround (4), surroundWithDownmix (5) (unspecified surroundWithDownmix) 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 pai
46、r of channels (if there is more than one pair) is a separate stereo audio signal, with the first channel of 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 s
47、tereo audio signal, with the first channel of the pair being the M channel and the second the S channel. BS EN 62379-2:2009Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 14/04/2010 07:40, Uncontrolled Copy, (c) BSI62379-2 IEC:2008(E) 9 surround and surroundWithDownmix should only be used wit
48、h 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 suit
49、able for matrix decoding. surroundWithDownmix shall indicate that the next two channels contain left and right channels (respectively) of a stereo downmix. Where more than one arrangement can be used to describe a format, the smallest applicable value should be used. EXAMPLE 1 A single stereo pair (2 channels) could be described by values stereo (2), surround (4), or surroundWithDownmix (5). The smallest of these
