IEC International ISo Standard IS0/IEC23090-34 Information technology - Coded First edition 2025-11 representation of immersive media Part 34: Immersive audio reference software Technologies de Il'information-Representation codée de medias immersifs Partie 34: Logiciel de reference audio immersif Reference number ISO/IEC 23090-34:2025(en) ISO/IEC 2025 IS0/IEC23090-34:2025(en) COPYRIGHT PROTECTED DOCUMENT @IS0/IEC2025 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 either ISO at the address below or Iso's member body in the country of the requester. ISO copyright office CP 40i : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Email: [email protected] Website: www.iso.org Published in Switzerland IS0/IEC2025-Allrightsreserved ii IS0/IEC23090-34:2025(en) Contents Page Foreword. ..iv 1 Scope. 1 2 1 Normative references. 3 Terms and definitions. .1 4 Referencesoftware. 1 4.1 Overview. .1 4.2 Structure. .2 4.3 Copyright disclaimer. 2 5 Bitstream decoding and rendering software 2 Annex A (informative) Bitstream encoding software .3 @IS0/IEC 2025-All rights reserved ii IS0/IEC23090-34:2025(en) Foreword ISo (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of Iso or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. Iso and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with IsO and IEC, also takepart in thework. Theprocedures 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 document should be noted. This document was drafted in accordance with the editorial rules of the Iso/ IEc Directives, Part 2 (see www.iso.org/directives or www.iec.ch/members_experts/refdocs). IsO and IEC draw attention to thepossibility that the implementation of this document may involve the use of (a) patent(s). ISO and IEC take no position concerning the evidence, validity or applicability of any claimed patent rights in respect thereof. As of the date of publication of this document, IsO and IEc had not received notice of (a) patent(s)which may be required to implement this document. However, implementers are cautioned that this may not represent the latest information, which may be obtained from the patent database available at www.iso.org/patents and https://patents.iec.ch. Iso and IEC shall not be held responsible for identifying any or all such patent rights. Anytradename used in thisdocument is informationgiven forthe convenienceofusers and does not constitute an endorsement. For an explanation of the voluntary nature of standards, the meaning of IsO specific terms and expressions related to conformity assessment, as well as information about Iso's adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www.iso.org/iso/foreword.html In the IEC, see www.iec.ch/understanding-standards ThisdocumentwaspreparedbyTechnical CommitteeISo/IECJTC1,Informationtechnology,Subcommittee Sc29,Coding ofaudio,picture, multimediaand hypermedia information. A list ofallparts in theISO23090 series can befound on theISO and IECwebsites. Any feedback or questions on this document should be directed to the user's national standards body. completelistingof thesebodiescanbefou