ISO/IEC 23008-3:2019
(Main)Information technology - High efficiency coding and media delivery in heterogeneous environments - Part 3: 3D audio
Information technology - High efficiency coding and media delivery in heterogeneous environments - Part 3: 3D audio
This document specifies technology that supports the efficient transmission of immersive audio signals and flexible rendering for the playback of immersive audio in a wide variety of listening scenarios. These include home theatre setups with 3D loudspeaker configurations, 22.2 loudspeaker systems, automotive entertainment systems and playback over headphones connected to a tablet or smartphone.
Technologies de l'information — Codage à haute efficacité et livraison des medias dans des environnements hétérogènes — Partie 3: Audio 3D
General Information
- Status
- Withdrawn
- Publication Date
- 27-Feb-2019
- Current Stage
- 9599 - Withdrawal of International Standard
- Start Date
- 17-Aug-2022
- Completion Date
- 30-Oct-2025
Relations
- Effective Date
- 25-Dec-2021
- Effective Date
- 25-Apr-2020
- Effective Date
- 28-Aug-2021
- Effective Date
- 02-Sep-2017
- Effective Date
- 02-Sep-2017
- Effective Date
- 02-Sep-2017
- Effective Date
- 02-Sep-2017
- Effective Date
- 02-Sep-2017
Frequently Asked Questions
ISO/IEC 23008-3:2019 is a standard published by the International Organization for Standardization (ISO). Its full title is "Information technology - High efficiency coding and media delivery in heterogeneous environments - Part 3: 3D audio". This standard covers: This document specifies technology that supports the efficient transmission of immersive audio signals and flexible rendering for the playback of immersive audio in a wide variety of listening scenarios. These include home theatre setups with 3D loudspeaker configurations, 22.2 loudspeaker systems, automotive entertainment systems and playback over headphones connected to a tablet or smartphone.
This document specifies technology that supports the efficient transmission of immersive audio signals and flexible rendering for the playback of immersive audio in a wide variety of listening scenarios. These include home theatre setups with 3D loudspeaker configurations, 22.2 loudspeaker systems, automotive entertainment systems and playback over headphones connected to a tablet or smartphone.
ISO/IEC 23008-3:2019 is classified under the following ICS (International Classification for Standards) categories: 35.040.40 - Coding of audio, video, multimedia and hypermedia information. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO/IEC 23008-3:2019 has the following relationships with other standards: It is inter standard links to ISO/IEC 23008-3:2019/Amd 2:2020, ISO/IEC 23008-3:2019/Amd 1:2019, ISO/IEC 23008-3:2022, ISO/IEC 23008-3:2015, ISO/IEC 23008-3:2015/Amd 4:2016, ISO/IEC 23008-3:2015/Amd 1:2016, ISO/IEC 23008-3:2015/Amd 3:2017, ISO/IEC 23008-3:2015/Amd 2:2016. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase ISO/IEC 23008-3:2019 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of ISO standards.
Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD 23008-3
Second edition
2019-02
Information technology — High
efficiency coding and media delivery
in heterogeneous environments —
Part 3:
3D audio
Technologies de l'information — Codage à haute efficacité et livraison
des medias dans des environnements hétérogènes —
Partie 3: Audio 3D
Reference number
©
ISO/IEC 2019
© ISO/IEC 2019
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
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Published in Switzerland
ii © ISO/IEC 2019 – All rights reserved
Contents Page
Foreword . x
Introduction . xii
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols, abbreviations and mnemonics . 2
3.1 Terms, definitions, symbols and abbreviated terms . 2
3.2 Mnemonics . 2
4 Technical overview . 2
4.1 Decoder block diagram . 2
4.2 Overview over the codec building blocks . 3
4.3 Efficient combination of decoder processing blocks in the time domain and QMF domain . 6
4.4 Rule set for determining processing domains . 9
4.4.1 Audio core codec processing domain . 9
4.4.2 Mixing . 9
4.4.3 DRC-1 Operation domains (DRC in rendering context) . 10
4.4.4 Audio core codec interface domain to rendering . 10
4.4.5 Rendering context . 10
4.4.6 Post-processing context . 10
4.4.7 End-of-chain context . 11
4.5 Sample rate converter . 11
4.6 Decoder delay . 11
4.7 Contribution mode of MPEG-H 3D audio . 12
4.8 MPEG-H 3D audio profiles and levels . 12
4.8.1 General . 12
4.8.2 Profiles . 12
5 MPEG-H 3D audio core decoder . 22
5.1 Definitions . 22
5.1.1 Joint stereo . 22
5.1.2 MPEG surround based stereo (MPS 212) . 22
5.2 Syntax . 22
5.2.1 General . 22
5.2.2 Decoder configuration . 23
5.2.3 MPEG-H 3D audio core bitstream payloads . 41
5.3 Data structure . 60
5.3.1 General . 60
5.3.2 General configuration data elements . 61
5.3.3 Loudspeaker configuration data elements . 63
5.3.4 Core decoder configuration data elements . 65
5.3.5 Downmix matrix data elements . 69
5.3.6 HOA rendering matrix data elements . 72
5.3.7 Signal group information elements . 74
5.3.8 Low frequency enhancement (LFE) channel element, mpegh3daLfeElement() . 75
5.4 Configuration element descriptions . 75
5.4.1 General . 75
5.4.2 Downmix configuration . 76
5.4.3 HOA rendering matrix configuration . 81
5.5 Tool descriptions . 86
5.5.1 General . 86
5.5.2 Quad channel element . 86
5.5.3 Transform splitting . 88
© ISO/IEC 2019 – All rights reserved iii
5.5.4 MPEG surround for mono to stereo upmixing . 95
5.5.5 Enhanced noise filling . 97
5.5.6 Audio pre-roll . 121
5.5.7 Fullband LPD . 124
5.5.8 Time-domain bandwidth extension. 135
5.5.9 LPD stereo coding . 148
5.5.10 Multichannel coding tool . 155
5.5.11 Filterbank and block switching . 166
5.5.12 Frequency domain prediction . 166
5.5.13 Long-term postfilter . 169
5.5.14 Tonal component coding . 175
5.5.15 Internal channel on MPS212 for low complexity format conversion . 184
5.5.16 High resolution envelope processing (HREP) tool . 196
5.6 Buffer requirements . 202
5.6.1 Minimum decoder input buffer . 202
5.6.2 Bit reservoir . 203
5.6.3 Maximum bit rate . 203
5.7 Stream access point requirements and inter-frame dependency . 203
6 Dynamic range control and loudness processing . 205
6.1 General . 205
6.2 Description . 205
6.3 Syntax . 205
6.3.1 Loudness metadata . 205
6.3.2 Dynamic range control metadata. 205
6.3.3 Data elements . 206
6.4 Decoding process . 207
6.4.1 General . 207
6.4.2 Dynamic range control . 209
6.4.3 Usage of downmixId in MPEG-H . 209
6.4.4 DRC set selection process . 210
6.4.5 DRC-1 for SAOC 3D Content . 212
6.4.6 DRC-1 for HOA content . 212
6.4.7 Loudness normalization . 214
6.4.8 Peak limiter . 214
6.4.9 Time-synchronization of DRC gains . 214
6.4.10 Default parameters . 214
7 Object metadata decoding . 215
7.1 General . 215
7.2 Description . 215
7.3 Syntax . 216
7.3.1 Object metadata configuration . 216
7.3.2 Top level object metadata syntax . 217
7.3.3 Subsidiary payloads for efficient object metadata decoding . 218
7.3.4 Subsidiary payloads for object metadata decoding with low delay . 222
7.3.5 Enhanced object metadata configuration . 227
7.4 Data structure . 230
7.4.1 Definition of ObjectMetadataConfig() payloads . 230
7.4.2 Efficient object metadata decoding . 230
7.4.3 Object metadata decoding with low delay . 239
7.4.4 Enhanced object metadata . 244
8 Object rendering . 247
8.1 Description . 247
8.2 Terms and definitions . 247
8.3 Input data . 248
8.4 Processing . 249
8.4.1 General remark . 249
8.4.2 Imaginary loudspeakers . 249
8.4.3 Dividing the loudspeaker setup into a triangle mesh . 250
iv © ISO/IEC 2019 – All rights reserved
8.4.4 Rendering algorithm . 252
9 SAOC 3D . 256
9.1 Description . 256
9.2 Definitions . 256
9.3 Delay and synchronization . 258
9.4 Syntax . 258
9.4.1 Payloads for SAOC 3D . 258
9.4.2 Definition of SAOC 3D payloads . 262
9.5 SAOC 3D processing . 264
9.5.1 Compressed data stream decoding and dequantization of SAOC 3D data . 264
9.5.2 Time/frequency transforms . 264
9.5.3 Signals and parameters . 264
9.5.4 SAOC 3D decoding . 266
9.5.5 Dual mode . 271
10 Generic loudspeaker rendering/format conversion . 272
10.1 Description . 272
10.2 Definitions . 273
10.2.1 General remarks . 273
10.2.2 Variable definitions . 273
10.3 Processing . 274
10.3.1 Application of transmitted downmix matrices . 274
10.3.2 Application of transmitted equalizer settings . 278
10.3.3 Downmix processing involving multiple channel groups . 278
10.3.4 Initialization of the format converter. 279
10.3.5 Audio signal processing . 294
11 Immersive loudspeaker rendering/format conversion . 299
11.1 Description . 299
11.2 Syntax . 301
11.3 Definitions . 301
11.3.1 General remarks . 301
11.3.2 Variable definitions . 302
11.4 Processing . 303
11.4.1 Initialization of the format converter. 303
11.4.2 Audio signal processing . 343
12 Higher order ambisonics (HOA) . 350
12.1 Technical overview . 350
12.1.1 Block diagram . 350
12.1.2 Overview of the decoder tools . 351
12.2 Syntax . 353
12.2.1 Configuration of HOA elements . 353
12.2.2 Payloads of HOA elements . 356
12.3 Data structure . 368
12.3.1 Definitions of HOA Config . 368
12.3.2 Syntax of getSubbandBandwidths() . 373
12.3.3 Definitions of HOA payload . 373
12.4 HOA tool description . 381
12.4.1 HOA frame converter . 381
12.4.2 Spatial HOA decoding . 398
12.4.3 HOA renderer . 428
12.4.4 Layered coding for HOA . 436
13 Binaural renderer . 439
13.1 General . 439
13.2 Frequency-domain binaural renderer . 439
13.2.1 General . 439
13.2.2 Definitions . 441
13.2.3 Parameterization of binaural room impulse responses . 445
13.2.4 Frequency-domain binaural processing . 457
© ISO/IEC 2019 – All rights reserved v
13.3 Time-domain binaural renderer . 464
13.3.1 General . 464
13.3.2 Definitions . 465
13.3.3 Parameterization of binaural room impulse responses . 467
13.3.4 Time-domain binaural processing . 471
14 MPEG-H 3D audio stream (MHAS) . 472
14.1 Overview . 472
14.2 Syntax . 472
14.2.1 Main MHAS syntax elements . 472
14.2.2 Subsidiary MHAS syntax elements . 474
14.3 Semantics . 475
14.3.1 mpeghAudioStreamPacket() . 475
14.3.2 MHASPacketPayload() . 475
14.3.3 Subsidiary MHAS packets . 477
14.4 Description of MHASPacketTypes . 477
14.4.1 PACTYP_FILLDATA . 477
14.4.2 PACTYP_MPEGH3DACFG. 477
14.4.3 PACTYP_MPEGH3DAFRAME . 477
14.4.4 PACTYP_SYNC . 478
14.4.5 PACTYP_SYNCGAP . 478
14.4.6 PACTYP_MARKER . 478
14.4.7 PACTYP_CRC16 and PACTYP_CRC32 . 479
14.4.8 PACTYP_DESCRIPTOR . 479
14.4.9 PACTYP_USERINTERACTION . 479
14.4.10 PACTYP_LOUDNESS_DRC . 479
14.4.11 PACTYP_BUFFERINFO . 479
14.4.12 PACTYP_GLOBAL_CRC16 and PACTYP_ GLOBAL_CRC32 . 480
14.4.13 PACTYP_AUDIOTRUNCATION . 480
14.4.14 PACTYP_AUDIOSCENEINFO . 481
14.5 Application examples . 481
14.5.1 Light-weighted broadcast . 481
14.5.2 MPEG-2 transport stream . 482
14.5.3 CRC error detection . 482
14.5.4 Audio sample truncation . 483
14.6 Multi-stream delivery and interface . 483
14.7 Carriage of generic data . 486
14.7.1 Syntax . 486
14.7.2 Semantics . 487
14.7.3 Processing at the MPEG-H 3D audio decoder . 487
15 Metadata audio elements (MAE) . 488
15.1 General . 488
15.2 Syntax . 489
15.3 Semantics . 496
15.4 Definition of mae_metaDataElementIDs . 509
15.5 Loudness compensation after gain interactivity . 510
16 Loudspeaker distance compensation . 512
17 Interfaces to the MPEG-H 3D audio decoder . 513
17.1 General . 513
17.2 Interface for local setup information . 513
17.2.1 General . 513
17.2.2 WIRE output . 513
17.2.3 Syntax for local setup information . 514
17.2.4 Semantics for local setup information . 514
17.3 Interface for local loudspeaker setup and rendering . 514
17.3.1 General . 514
17.3.2 Syntax for local loudspeaker signalling . 515
17.3.3 Semantics for local loudspeaker signalling . 516
vi © ISO/IEC 2019 – All rights reserved
17.4 Interface for binaural room impulse responses (BRIRs) . 517
17.4.1 General . 517
17.4.2 Syntax of binaural renderer interface . 517
17.4.3 Semantics . 521
17.5 Interface for local screen size information . 525
17.5.1 General . 525
17.5.2 Syntax . 525
17.5.3 Semantics . 525
17.6 Interface for signaling of local zoom area . 526
17.6.1 General . 526
17.6.2 Syntax . 526
17.6.3 Semantics . 526
17.7 Interface for user interaction . 527
17.7.1 General . 527
17.7.2 Definition of user interaction categories . 527
17.7.3 Definition of an interface for user interaction . 527
17.7.4 Syntax of interaction interface . 528
17.7.5 Semantics of interaction interface . 529
17.8 Interface for loudness normalization and dynamic range control (DRC) . 531
17.9 Interface for scene displacement data . 532
17.9.1 General . 532
17.9.2 Definition of an interface for scene-displacement data . 532
17.9.3 Syntax of the scene displacement interface . 533
17.9.4 Semantics of the scene displacement interface . 533
17.10 Interfaces for channel-based, object-based, and HOA metadata and audio data . 534
17.10.1 General . 534
17.10.2 Expectations on external renderers . 534
17.10.3 Object-based metadata and audio data (object output interface) . 534
17.10.4 Channel-based metadata and audio data . 540
17.10.5 HOA metadata and audio data . 543
17.10.6 Audio PCM data . 545
18 Application and processing of local setup information and interaction data and scene
displacement data . 546
18.1 Element metadata preprocessing . 546
18.2 Interactivity limitations and restrictions . 551
18.2.1 General information . 551
18.2.2 WIRE interactivity . 551
18.2.3 Position interactivity. 552
18.2.4 Screen-related element remapping and object remapping for zooming . 552
18.2.5 Closest loudspeaker playout . 553
18.3 Screen-related element remapping . 553
18.4 Screen-related adaptation and zooming for higher order ambisonics (HOA) . 556
18.5 Object remapping for zooming . 557
18.6 Determination of the closest loudspeaker . 558
18.7 Determination of a list of loudspeakers for conditioned closest loudspeaker playback. 559
18.8 Processing of scene displacement angles for channels and objects (CO) . 561
18.9 Processing of scene displacement angles for scene-based content (HOA) . 562
18.10 Determination of a reduced reproduction layout based on excluded sectors . 564
18.11 Diffuseness rendering . 565
19 MPEG-H 3D audio profile definition . 566
20 Carriage of MPEG-H 3D audio in ISO base media file format . 567
20.1 General . 567
20.2 Random access and stream access . 567
20.3 Overview of new box structures . 567
20.4 MHA decoder configuration record . 567
20.4.1 Definition . 567
20.4.2 Syntax . 568
20.4.3 Semantics . 568
© ISO/IEC 2019 – All rights reserved vii
20.5 MPEG-H audio sample entry . 568
20.5.1 Definition . 568
20.5.2 Syntax . 569
20.5.3 Semantics . 569
20.6 MPEG-H audio MHAS sample entry . 570
20.6.1 Definition . 570
20.6.2 Syntax . 571
20.7 MHA dynamic range control and loudness .
...
ISO/IEC 23008-3:2019は、情報技術の分野における先進的な標準であり、高効率コーディングおよびメディア配信に関するものです。特に、3Dオーディオに関する技術を定め、没入型オーディオ信号の効率的な伝送とさまざまなリスニングシナリオにおける柔軟なレンダリングをサポートしています。 この標準の範囲は非常に広く、家庭用シアターの3Dスピーカー構成や22.2スピーカーシステム、また自動車エンターテイメントシステム、さらにはタブレットやスマートフォンに接続されたヘッドフォンを通じての再生にまで及びます。これにより、ユーザーは多様な環境で高品質なオーディオ体験を享受することができるようになります。 ISO/IEC 23008-3:2019の強みは、異なる環境やデバイスに最適化されたオーディオ再生を可能にする点です。この標準は、異なる音響条件を考慮に入れた設計がなされているため、聴取者に臨場感あふれる音響体験を提供します。これにより、さまざまな業界において、その適用範囲は広がる一方で、ユーザーのニーズに応じた柔軟なオーディオソリューションを実現することができます。 さらに、3Dオーディオの技術的基盤を整えることにより、クリエイターやエンジニアが高度な音響効果を施す際にも役立つ情報を提供しています。したがって、この標準は、今後のメディア制作やエンターテイメント分野における革新を促進する重要な役割を果たしていると言えるでしょう。
Die Norm ISO/IEC 23008-3:2019 bietet eine umfassende Spezifikation zur effizienten Übertragung von immersiven Audiosignalen und flexibler Wiedergabe in heterogenen Umgebungen. Der Anwendungsbereich dieser Norm ist äußerst relevant in der heutigen Medienlandschaft, wo die Nachfrage nach qualitativ hochwertigem Klang in unterschiedlichen Wiedergabeszenarien kontinuierlich steigt. Ein zentrales Stärke der ISO/IEC 23008-3:2019 liegt in ihrer Vielseitigkeit. Sie deckt eine breite Palette von Hörumgebungen ab, darunter Heimkinos mit 3D-Lautsprecherkonfigurationen und 22.2 Lautsprechersystemen. Dies ermöglicht es Entwicklern und Herstellern, ihre Produkte an verschiedene Gerätetypen anzupassen, von modernen Auto-Entertainment-Systemen bis hin zu Kopfhörern, die mit Tablets oder Smartphones verbunden sind. Mit dieser Norm wird sichergestellt, dass die Übertragung von High-Efficiency-Audio nicht nur effizient, sondern auch qualitativ hochwertig bleibt, unabhängig von der spezifischen technischen Konfiguration. Ein zusätzlicher Vorteil der Norm ist die Unterstützung für flexible Rendering-Optionen. Die Möglichkeit, immersives Audio an verschiedene Ausgabegeräte anzupassen, steigert nicht nur die Benutzererfahrung, sondern fördert auch die Innovation in der Audio-Technologie. Durch die Bereitstellung einheitlicher Standards wird der Implementierungsaufwand für Entwickler minimiert, was wiederum die Markteinführungszeit verkürzt und die Entwicklungskosten senkt. Die ISO/IEC 23008-3:2019 ist daher nicht nur ein technisches Dokument, sondern ein wesentlicher Teil der modernen Audiotechnologie. Ihre Relevanz wird durch die wachsende Popularität von immersiven Audioerlebnissen in der Unterhaltungsindustrie unterstrichen. Zusammenfassend lässt sich sagen, dass die Norm die Grundlage für zukunftsweisende Entwicklungen im Bereich des immersiven Audioschaffens darstellt und ihren Nutzern eine qualitativ hochwertige, flexible und effiziente Audioübertragung garantiert.
La norme ISO/IEC 23008-3:2019 revêt une importance capitale dans le domaine de la technologie de l'information, spécifiquement en matière de codage haute efficacité et de diffusion multimédia dans des environnements hétérogènes, en se concentrant sur l'audio 3D. L'étendue de cette norme couvre un large éventail de technologies conçues pour assurer la transmission efficace de signaux audio immersifs, ainsi qu'un rendu flexible pour la lecture de l'audio immersif dans divers scénarios d'écoute. L'un des points forts de la norme est sa capacité à s'adapter à différents systèmes d'écoute, que ce soit des configurations de haut-parleurs 3D dans des installations de home cinéma, des systèmes de haut-parleurs 22.2, ou encore dans des systèmes de divertissement automobile. Cette diversité et cette flexibilité répondent à des besoins variés, tant pour les utilisateurs professionnels que pour les consommateurs, rendant l’expérience d’écoute incroyablement immersive. De plus, l'inclusivité de la norme pour des équipements tels que les écouteurs connectés à des tablettes ou des smartphones illustre son caractère moderne et adapté aux technologies actuelles. Cela démontre également la pertinence d'ISO/IEC 23008-3:2019 face à l'évolution rapide du paysage technologique et des pratiques d'écoute contemporaines. En résumé, la norme ISO/IEC 23008-3:2019 s'affirme comme un pilier fondamental pour l'innovation dans la diffusion audio, garantissant des expériences d'écoute enrichissantes et de haute qualité dans un monde où la diversité des environnements d'écoute est de plus en plus prévalente. La capacité à desservir une large gamme de configurations garantit sa pertinence et son importance dans le secteur audiovisuel moderne.
ISO/IEC 23008-3:2019 is a pivotal standard within the realm of information technology, specifically focusing on high-efficiency coding and media delivery in heterogeneous environments, with an emphasis on 3D audio. The document meticulously outlines the technology required for the efficient transmission of immersive audio signals, ensuring a flexible rendering process that adapts to various playback scenarios. This adaptability is critical in modern audio applications, as it addresses the increasing demand for high-quality sound experiences across a multitude of platforms. One of the significant strengths of ISO/IEC 23008-3:2019 is its comprehensive approach to supporting diverse listening scenarios. The standard recognizes the varied environments in which audio is consumed, from sophisticated home theatre setups that incorporate 3D loudspeaker configurations to 22.2 loudspeaker systems, as well as automotive entertainment systems. Moreover, it seamlessly extends its relevance to personal devices by accommodating playback through headphones connected to tablets and smartphones, thus catering to an extensive range of user preferences and technology interfaces. Furthermore, the standard’s focus on efficient transmission is especially pertinent in today’s digital landscape, where bandwidth considerations are paramount. By providing specifications that facilitate the delivery of high-quality immersive audio without unnecessary data overhead, ISO/IEC 23008-3:2019 ensures that consumers experience the richness of 3D audio regardless of the device they use. This emphasis on operational efficiency not only enhances user satisfaction but also supports the broader goal of advancing immersive sound technologies. The document stands as a crucial reference point for developers, audio engineers, and manufacturers striving to implement cutting-edge audio solutions. Its relevance in shaping future innovations in immersive audio technology is undeniable, as it lays the groundwork for standardizing practices that push the boundaries of audio delivery. In summary, ISO/IEC 23008-3:2019 plays a vital role in the evolution of 3D audio, fostering an ecosystem that prioritizes immersive experiences across diverse platforms and environments.
ISO/IEC 23008-3:2019 표준은 다양한 환경에서의 고효율 오디오 및 미디어 전송 기술을 규명하는 중요한 문서입니다. 이 표준의 범위는 몰입형 오디오 신호의 효율적인 전송을 지원하고, 다양한 청취 시나리오에서 몰입형 오디오의 재생을 위한 유연한 렌더링 기술을 포함합니다. 특히, 가정용 극장 설정에서 3D 스피커 구성을 지원하거나, 22.2 스피커 시스템, 자동차 오디오 엔터테인먼트 시스템, 그리고 태블릿 또는 스마트폰에 연결된 헤드폰을 통한 재생 등에서 뛰어난 성능을 발휘합니다. ISO/IEC 23008-3:2019의 강점은 다양한 청취 환경에 대한 지원을 통해 사용자가 최적의 오디오 경험을 할 수 있도록 한다는 점입니다. 이는 기술 발전과 함께 현대의 미디어 소비 방식에 적합하게 설계되어, 특히 몰입형 오디오의 재생을 위해 필요한 다각적인 접근 방식을 제공하는 데 중점을 두고 있습니다. 이 표준의 현재 적합성은 특히 홈 오디오 시스템과 이동 기기에서의 오디오 재생이 증가하는 추세에 비추어 볼 때 더욱 강하게 드러납니다. 다양한 스피커 시스템과의 호환성, 그리고 유연한 재생 방법은 사용자가 원하는 몰입감 있는 경험을 제공하기에 적합합니다. 따라서, ISO/IEC 23008-3:2019는 고효율 코딩과 미디어 전송 기술을 필요로 하는 모든 분야에 걸쳐 매우 중요한 기준이 되고 있습니다.
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