欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    ISO IEC 23008-3 AMD 1-2016 Information technology - High efficiency coding and media delivery in heterogeneous environments - Part 3 3D audio - Amendment 1 MPEG.pdf

    • 资源ID:1257080       资源大小:255.50KB        全文页数:10页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    ISO IEC 23008-3 AMD 1-2016 Information technology - High efficiency coding and media delivery in heterogeneous environments - Part 3 3D audio - Amendment 1 MPEG.pdf

    1、Information technology High efficiency coding and media delivery in heterogeneous environments Part 3: 3D audio AMENDMENT 1: MPEG-H, 3D audio profile and levels Technologies de linformation Codage haute efficacit et livraison des medias dans des environnements htrognes Partie 3: Audio 3D AMENDEMENT

    2、1: Niveaux et profil audio 3D MPEG-H INTERNATIONAL STANDARD ISO/IEC 23008-3 First edition 2015-10-15 Reference number ISO/IEC 23008-3:2015/Amd.1:2016(E) AMENDMENT 1 2016-08-01 ISO/IEC 2016 ii ISO/IEC 2016 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2016, Published in Switzerland All rig

    3、hts reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from e

    4、ither ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org ISO/IEC 23008-3:2015/Amd.1:2016(E) ISO/IEC 23008-3:2015/Amd

    5、.1:2016(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject fo

    6、r which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on

    7、all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted.

    8、 This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying an

    9、y or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of u

    10、sers and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformit y assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the follow

    11、ing URL: www.iso.org/iso/foreword.html. Amendment 1 to ISO/IEC 23008-3:2015 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information. ISO/IEC 2016 All rights reserved iii Information technolog

    12、y High efficiency coding and media delivery in heterogeneous environments Part 3: 3D audio AMENDMENT 1: MPEG-H, 3D audio profile and levels Page 346 Add the following section after Clause 18. 19 MPEG-H 3D Audio Profile Definition 19.1 Profile: Main Profile The Main Profile for MPEG-H 3D Audio contai

    13、ns all normative bitstream elements and normative decoder tools defined in MPEG-H 3D Audio specification. That means that the following tools will be included Main Profile decoders: MPEG-H 3D Audio Core Decoder HOA Rendering SAOC 3D Renderer Static object metadata (MAE) and rendering Dynamic object

    14、metadata (OAM) and rendering Generic Loudspeaker Rendering/Format Conversion Immersive Loudspeaker Rendering/Format Conversion Binaural Rendering Time Domain and/or Frequency Domain H2B Binaural Rendering Loudness Metadata DRC processing ISO/IEC 23008-3:2015/Amd.1:2016(E) ISO 2016 All rights reserve

    15、d 1 ISO/IEC 23008-3:2015/Amd.1:2016(E) The following table specifies the levels of the Main Profile. Mpegh3daProfile LevelIndication Applicable Notes Max. number of core channels Max. sampling rate of core Max number of loudspeaker output channels Max. PCU in wMOPS a Max. RCU 1 8 48000 8 138 2 16 48

    16、000 16 265 3 1) 2) 3) 32 48000 24 448 4 1) 2) 3) 64 48000 24 830 5 1) 2) 3) 128 96000 64 3223 General restrictions for all levels: HOA: The number of active predictions must not be larger than (NumActivePred in Table 127 Syntax of HOAPredictionInfo(DirSigChannelIds, NumOfDirSigs). N is the HOA order

    17、. For the definition of global HOA parameters refer to 12.4.1.1. The HOA order must not be larger than 3 for Level 1, 4 for Level 2, 5 for Level 3, 6 for Level 4 and 7 for Level 5 (see HoaOrder in Table 119 Syntax of HOAConfig(). The number of input objects (for SAOC encoding) must not be larger tha

    18、n 2 times the maximum num- ber of core coder channels The number of predominant sounds of HOA must not be larger than 8 for Level 1, 10 for Level 2, 12 for Level 3, 14 for Level 4, and 16 for Level 5. Restrictions for specific levels:1) SAOC: The maximum number of SAOC downmix channels is 32. SAOC o

    19、bjects must be grouped, i.e. a set of SAOC objects is mixed into a group of maximum of 8 downmix channels and not to any other downmix channel. IOCs must not be transmitted between SAOC objects different groups. 2) The maximum number of channels in each group with SignalGroupTypeChannels is 24, mult

    20、iple such groups can exist 3) For DRC-1 and DRC-3 the maximum number of channel groups for each is 16. Note: Also, it is assumed that the both Binaural Renderers (TD and FD) are implemented. The total complexity may increase if only a single Binaural Renderer is available. The numbers for binaural p

    21、rocessing are calculated on the basis of BRIR filters of 1 second length measured in a BS.1116 compliant room. aThe maximum PCU numbers are based on theoretical calculations and estimations of the number of opera- tions. They represent worst case total complexity numbers. All PCU figures are provide

    22、d as informative data.2 ISO 2016 All rights reserved ISO/IEC 23008-3:2015/Amd.1:2016(E) 19.1.1 Examples for Level 1 of Main Profile Example 1: 8 input channels as a 7.1 mix are carried as channels and coded at a low bitrate. In the decoder a downmix is performed to 5.1 channels. Finally, a multi-ban

    23、d dynamic range compression is applied to the 6 loudspeaker output signals. Decoder building block Core Coder channels Rendering Domain switch DRC Post- processing Total PCU in wMOPS Description 8 (incl all tools) = 4 CPEs 8 ch - 6 ch 6 ch FD- TD multi-band DRC 2 -none- PCU 46 5 9 2.2 62 Example 2:

    24、A 2 ndorder HOA signal is carried in 8 core coder channels and is decoded to produce 9 HOA components. The H2B binaural processing is applied to render the signal for a headphone output. Single band dynamic range compression is applied to the output. Decoder building block Core Coder channels Render

    25、ing Domain switch DRC Post- processing Total PCU in wMOPS Description 8 (including all tools) = 4SCE + 2CPE 4 Amb + 4 PS (HOA rendering matrix 9x8 not applied) 8 ch FD- TD (if SBR, otherwise not applied) DRC 2 full band H2B-Binaural Rendering of 9 HOA compo- nents PCU 12.6+21.6 = 34.2 15 12/0 0.5 21

    26、 82/70 19.1.2 Examples for Level 2 of Main Profile Example 1: A 4 thOrder Higher Order Ambisonics (HOA) signal is coded at about 500 kbit/s, so no SBR is applied. The output domain of the core decoder is time domain so no domain switch is necessary. The HOA spatial decoder reproduces a 4 thorder HOA

    27、 signal which is rendered to a 11.1 loudspeaker setup. Decoder building block Core Coder channels Rendering Domain switch DRC Post- processing Total PCU in wMOPS Description 8 (including all tools) = 2CPE + 4 SCE 4 Amb + 4 PS (HOA Decoding + Rendering to 11 Speakers) - DRC 2 full band PCU 8+19.4=27.

    28、4 24 + 13 = 37 0 0.5 0 65 ISO 2016 All rights reserved 3 ISO/IEC 23008-3:2015/Amd.1:2016(E) Example 2: A 4 thOrder Higher Order Ambisonics (HOA) signal is coded at about 250 kbit/s, so SBR is applied. The output domain of the core decoder is frequency domain and a domain switch is necessary. The HOA

    29、 spatial decoder reproduces a 4 thorder HOA signal which is rendered to a 11.1 loudspeaker setup. Additionally 2 dialogue objects accompany the HOA scene. Decoder building block Core Coder channels Rendering Domain switch DRC Post- processing Total PCU in wMOPS Description 8 (HOA) = 2CPE + 4 SCE plu

    30、s 2 (Objects) = 2 SCE 4 Amb + 4 PS (HOA Decoding + Rendering to 11 Speakers) + 2 Objects 10 ch FD to TD DRC 2 full band PCU 12.6 + 21.6 + 6.3 = 40.524 + 13 + 2 = 39 15 0.5 0 95 19.1.3 Examples for Level 3 of Main Profile Example 1: A 4 thOrder Higher Order Ambisonics (HOA) signal is coded at about 2

    31、50 kbit/s, so SBR is applied. The output domain of the core decoder is frequency domain and a domain switch on the core coder transport channels is necessary. The HOA spatial decoder reproduces a 4 thorder HOA signal which is rendered to a 22.2 loudspeaker setup. Decoder building block Core Coder ch

    32、annels Rendering Domain switch DRC Post- processing Total PCU in wMOPS Description 8 (HOA) = 2CPE + 4 SCE plus 4 Amb + 4 PS (HOA Decoding + Rendering to 22 Speakers) 8 ch FD to TD DRC 2 full band PCU 12.6 + 21.6 = 34.2 24 + 26 = 50 12 1 0 974 ISO 2016 All rights reserved ISO/IEC 23008-3:2015/Amd.1:2016(E) ISO/IEC 2016 All rights reserved ICS 35.040 Price based on 4 pages


    注意事项

    本文(ISO IEC 23008-3 AMD 1-2016 Information technology - High efficiency coding and media delivery in heterogeneous environments - Part 3 3D audio - Amendment 1 MPEG.pdf)为本站会员(sumcourage256)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开