复制成功
  • 图案背景
  • 纯色背景

笔记

  • 2019-11-16
    为大人带来形象的羊生肖故事来历 为孩子带去快乐的生肖图画故事阅读
    谈谈怎样学好数学_苏步青-中学生文库
springerbo..

上传于:2019-11-08

粉丝量:4

该文档贡献者很忙,什么也没留下。



BS EN 61937-9-2007 British Standard European Standard英国标准欧盟标准电子版下载

下载积分:5000

内容提示: BRITISH STANDARDBS EN 61937-9:2007Digital audio — Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 —Part 9: Non-linear PCM bitstreams according to the MAT formatThe European Standard EN 61937-9:2007 has the status of a British StandardICS 33.160.30; 35.040??????????????????????????????????????????????????????????????????????Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 05:59, Uncontrolled Copy, (c) BSI BS EN 61937-9:2007This British Standard was published und...

文档格式:PDF| 浏览次数:0| 上传日期:2019-11-08 01:37:00| 文档星级:
BRITISH STANDARDBS EN 61937-9:2007Digital audio — Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 —Part 9: Non-linear PCM bitstreams according to the MAT formatThe European Standard EN 61937-9:2007 has the status of a British StandardICS 33.160.30; 35.040??????????????????????????????????????????????????????????????????????Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 05:59, Uncontrolled Copy, (c) BSI BS EN 61937-9:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2007© BSI 2007ISBN 978 0 580 58510 4National forewordThis British Standard is the UK implementation of EN 61937-9:2007. It is identical to IEC 61937-9:2007.The UK participation in its preparation was entrusted to Technical Committee EPL/100, Audio, video and multimedia systems and equipment.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 05:59, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD EN 61937-9 NORME EUROPÉENNE EUROPÄISCHE NORM November 2007 CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels © 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61937-9:2007 E ICS 33.160.30; 35.040 English version Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 9: Non-linear PCM bitstreams according to the MAT format (IEC 61937-9:2007) Audionumérique - Interface pour les flux de bits audio à codage MIC non linéaire conformément à la CEI 60958 - Partie 9: Flux de bits PCM non linéaire conformément au format MAT (CEI 61937-9:2007) Digitalton - Schnittstelle für nichtlinear-PCM-codierte Audio-Bitströme unter Verwendung von IEC 60958 - Teil 9: Nichtlineare PCM-Bitströme entsprechend MAT-Format (IEC 61937-9:2007) This European Standard was approved by CENELEC on 2007-10-01. 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 standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in two official versions (English and German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and 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, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 05:59, Uncontrolled Copy, (c) BSI EN 61937-9:2007 – 2 – Foreword The text of document 100/1198/CDV, future edition 1 of IEC 61937-9, 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 Unique Acceptance Procedure and was approved by CENELEC as EN 61937-9 on 2007-10-01. 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) 2008-07-01 – latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2010-10-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 61937-9:2007 was approved by CENELEC as a European Standard without any modification. __________ Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 05:59, Uncontrolled Copy, (c) BSI – 3 – EN 61937-9:2007 CONTENTS 1 Scope ............................................................................................................................4 2 Normative references .....................................................................................................4 3 Terms, definitions and abbreviations...............................................................................4 3.1 Terms and definitions ............................................................................................4 3.2 Abbreviations ........................................................................................................4 4 Mapping of the audio bitstream on to IEC 61937-1 ..........................................................4 4.1 General.................................................................................................................4 4.2 MAT burst-info.......................................................................................................5 5 Format of MAT data-bursts .............................................................................................5 5.1 General.................................................................................................................5 5.2 Pause data-burst ...................................................................................................5 5.3 Audio data-bursts ..................................................................................................5 5.3.1 The MAT data............................................................................................5 5.3.2 Latency of the MAT decoder.......................................................................7 Annex ZA (normative) Normative references to international publications with their corresponding European publications..............................................................................9 Bibliography .........................................................................................................................8 Figure 1 – MAT data-burst ....................................................................................................6 Figure 2 – Latency of MAT decoding .....................................................................................7 Table 1 – Fields of burst-info.................................................................................................5 Table 2 – Repetition period of the pause data-bursts .............................................................5 Table 3 – Data-type-dependent information for MAT ..............................................................6 Table 4 – Sample rate of MAT encoded audio and IEC 60958 frame rate ...............................6 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 05:59, Uncontrolled Copy, (c) BSI EN 61937-9:2007 – 4 – DIGITAL AUDIO – INTERFACE FOR NON-LINEAR PCM ENCODED AUDIO BITSTREAMS APPLYING IEC 60958 – Part 9: Non-linear PCM bitstreams according to the MAT format 1 Scope This part of IEC 61937 describes the method to convey non-linear PCM bitstreams encoded according to the MAT format. 2 Normative references The following Standards contain provisions which, through reference in the text, referenced 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. IEC 60958 (all parts), Digital audio interface IEC 61937-1:2007, Digital audio – Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 – Part 1: General IEC 61937-2:2007, Digital audio – Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 – Part 2: Burst info 3 Terms, definitions and abbreviations For the purpose of this standard, the following definitions and abbreviations apply. 3.1 Terms and definitions 3.1.1 latencydelay time of an external audio decoder to decode a MAT data-burst, defined as the sum of two values of the receiving delay time and the decoding delay time 3.2 Abbreviations IEC International Electrotechnical Commission ISO International Organization for Standardization ISO/IEC MPEG The Moving Picture Experts Group, a joint committee of ISO and IEC MAT Metadata-enhanced Audio Transmission 4 Mapping of the audio bitstream on to IEC 61937-1 4.1 General The coding of the bitstream and data-burst is in accordance with IEC 61937-1 and 61937-2. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 05:59, Uncontrolled Copy, (c) BSI – 5 – EN 61937-9:2007 4.2 MAT burst-info The 16-bit burst-info contains information about the data which will be found in the data-burst. Table 1 – Fields of burst-info Bits of Pc Value Contents Reference point R Repetition period of data-burst in IEC 60958 frames 0 – 4 Data-type 0 – 21 According to IEC 61937 22 MAT R-MAT 15 360 23 – 31 According to IEC 61937 5, 6 Sub- data-type 0 MAT 1 – 3 According to IEC 61937 7 – 15 According to IEC 61937 5 Format of MAT data-bursts 5.1 General This clause specifies the audio data-burst MAT. Specific properties such as reference points, repetition period, the method of filling stream gaps, and decoding latency are specified. The decoding latency (or delay), indicated for the data-type, should be used by the transmitter to schedule data-bursts as necessary to establish synchronization between picture and decoded audio. 5.2 Pause data-burst Pause data-burst for MAT is given in Table 2Table 2 – Repetition period of the pause data-bursts Repetition period of pause data-burst Data-type of audio data-burst Mandatory Recommended MAT - 4 IEC 60958 frames 5.3 Audio data-bursts 5.3.1 The MAT data The MAT bitstream consists of a sequence of MAT frames. The data-type of a MAT data-burst is 22, and the sub-data-type is 0. When MAT data is being transmitted, the transmission device shall ensure that both the data-type and sub-data-type values are set correctly. Additionally, the receiving device shall utilize both the data-type and sub data-type values to ensure that the content of the data-burst is correctly identified as MAT. The data-burst is headed with a burst-preamble, followed by the burst-payload. The burst-payload of each MAT data-burst shall contain 1 complete MAT frame. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 05:59, Uncontrolled Copy, (c) BSI EN 61937-9:2007 – 6 – The length of the MAT data-burst will depend on the encoded bit rate (which determines the MAT frame length). R-MATMAT burst-payload Pd Pa Pb Pc Repetition period of the burst StuffingRegular rate of the MAT frames MAT burst-payload Pd Pa Pb PcMAT frame R-MATMAT frameIEC 1920/07 Figure 1 – MAT data-burst The data-type-dependent information for MAT is given in Table 3. Table 3 – Data-type-dependent information for MAT Bits of Pc LSB..MSB Value Contents 8 - 12 00h Reserved, shall be set to ‘0’ Table 4 shows the relation between the sample rate of MAT encoded audio and the IEC 60958 frame rate used to deliver MAT data via the IEC 61937 interface. Table 4 – Sample rate of MAT encoded audio and IEC 60958 frame rate MAT sample rate IEC 60958 frame rate 48 kHz 768 kHz 96 kHz 768 kHz 192 kHz 768 kHz 44,1 kHz 705,6 kHz 88,2 kHz 705,6 kHz 176,4 kHz 705,6 kHz The reference point of a MAT data-burst (R-MAT) is the IEC 60958 frame that occurs half-way through the MAT burst-payload. The data-bursts containing MAT frames shall occur at a regular rate, with the reference point of the MAT data-burst beginning 15 360 IEC 60958 frames after the reference point of the preceding MAT data-burst. The units of burst-length shall be in bytes. The maximum size of a MAT burst-payload is 61 424 bytes. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 05:59, Uncontrolled Copy, (c) BSI – 7 – EN 61937-9:2007 5.3.2 Latency of the MAT decoder The latency of a MAT decoder which receives this signal is specified, with respect to the reference point of the MAT data-burst, to be equal to the time occupied by 1/12 of a MAT frame (equivalent to 1 280 IEC 60958 frames at the IEC 60958 frame rate). R-MATMAT burst-payload Pd Pa Pb Pc Latency of the MAT decoderStuffingRegular rate of the MAT frames MAT burst-payload Pd Pa Pb PcMAT frame R-MATMAT frameIEC 1921/07 Figure 2 – Latency of MAT decoding It is recommended that Pause data-bursts are used to fill stream gaps in the MAT bitstream as described in IEC 61937-1, and that pause data-bursts be transmitted with a repetition period of 4 IEC 60958 frames, except when other repetition periods are necessary to fill the precise stream gap length (which may not be a multiple of 4 IEC 60958 frames), or to meet the requirement on burst spacing (refer to IEC 61937-1, 6.3.3). When a stream gap in a MAT stream is filled by a sequence of pause data-bursts, the Pa of the first pause data-burst shall be located one frame repetition period following the Pa of the previous MAT frame. It is recommended that the sequence(s) of Pause data-bursts which fill the stream gap should continue from this point up to (as close as possible considering the 4 IEC 60958 frame length of the Pause data-burst) the Pa of the first MAT data-burst which follows the stream gap. The gap length parameter contained in the pause data-burst is intended to be interpreted by the MAT decoder as an indication of the number of decoded PCM samples which are missing (due to the resulting audio gap). If the sizes of the MAT frames before and after the stream gap are not equal (due to a bitrate change in the interrupted MAT bitstream), this value may differ from the actual number of sampling periods of the audio contained in the stream gap due to the definition of the MAT data-burst reference points. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 05:59, Uncontrolled Copy, (c) BSI EN 61937-9:2007 – 8 – Bibliography The following document has served as a reference for the specification of the related data-type and other parts of IEC 61937. ReferenceTechnical Bulletin Dolby ® True HD Transmission over the HDMI™ Interface This document is available under license from Dolby Laboratories Licensing Corporation. Dolby is a registered trademark of Dolby Laboratories. HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC. ____________ Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 05:59, Uncontrolled Copy, (c) BSI – 9 – EN 61937-9:2007 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 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 IE C 60958 Series Digital audio interface EN 60958 Series IEC 61937-1 2007 Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 1: General EN 61937-1 2007 IEC 61937-2 2007 Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 2: Burst-info EN 61937-2 2007 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 05:59, Uncontrolled Copy, (c) BSI BS EN 61937-9:2007BSI389 Chiswick High RoadLondonW4 4ALBSI — British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions.It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0)20 8996 7400.BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards.Buying standardsOrders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: +44 (0)20 8996 9001. Fax: +44 (0)20 8996 7001. Email: orders@bsi-global.com. Standards are also available from the BSI website at http://www.bsi-global.com.In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested.Information on standardsBSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel: +44 (0)20 8996 7111. Fax: +44 (0)20 8996 7048. Email: info@bsi-global.com.Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002. Fax: +44 (0)20 8996 7001. Email: membership@bsi-global.com.Information regarding online access to British Standards via British Standards Online can be found at http://www.bsi-global.com/bsonline.Further information about BSI is available on the BSI website at http://www.bsi-global.com.CopyrightCopyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI.This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained.Details and advice can be obtained from the Copyright & Licensing Manager. Tel: +44 (0)20 8996 7070. Fax: +44 (0)20 8996 7553. Email: copyright@bsi-global.com.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 24/03/2008 05:59, Uncontrolled Copy, (c) BSI 英国标准 BSBritish StandardBS 标准是由英国标准学会(British Standards Institution,简称BSI)制订的英国标准。成立于 1901 年的 BSI 是全球首个国家标准机构。BSI 负责发起全球多项最常用的管理系统标准,每年发布标准超过 2500 个。这些标准从结算账单到能源管理,从残疾人通道到纳米技术;跨越航空航天、施工、能源、工程、财务、医疗保健、IT 和零售等领域。BS 的服务包括以下类别: “ 风筝 ” 标志认证或 S BS 认证标志: :“风筝”标志是 BSI 特有的注册商标,国内外厂家均可申请使用。使用这种标志的企业不仅其产品必须符合有关的 BS 标准的要求,而且必须具有符合 BS-5790的质量保证体系(ISO9000 族的质量保证模式标准也可),在认证过程中,还要对该体系进行评定。 安全标志认证:使用安全标志的产品,必须符合 BS标准的安全要求或其它的安全规定。申请及认可办法与“风筝”标志的办法大体相同,同样适应于国内外企业。 企业质量保证能力认证:这种制度是按照 BS-5790(或 ISO9000 族)对企业的质量保证体系进行评价,但不要求产品必须采用 BS 标准。截止 91 年 BSI 以评定注册的企业约为 12000 个。C BS9000/CECC 和 和 Q IECQ 认证:这种认证是专为电子元器件进行质量评定。BS9000 适用于国内,CECC 适用于西欧多数国家,而 IECQ 则适用于国际,其目的在于提高电子元器件的质量和可靠性,以保证电子设备的质量。 库存能力的评定和注册:这种评定制度是对批发商的仓库存货质量及管理方法进行评价。获得这种标志的产品,说明其商品的制造、贮存、包装、处理等均达到了高水平。

关注我们

关注微信公众号

您选择了以下内容