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TECHNICAL SPECIFICATION
5G;
Subjective test methodologies for the evaluation of immersive
audio systems
(3GPP TS 26.259 version 15.0.0 Release 15)
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3GPP TS 26.259 version 15.0.0 Release 15 1 ETSI TS 126 259 V15.0.0 (2018-10)
Reference
DTS/TSGS-0426259vf00
Keywords
5G
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3GPP TS 26.259 version 15.0.0 Release 15 2 ETSI TS 126 259 V15.0.0 (2018-10)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
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Foreword
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
.
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
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3GPP TS 26.259 version 15.0.0 Release 15 3 ETSI TS 126 259 V15.0.0 (2018-10)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 5
Introduction . 5
1 Scope . 6
2 References . 6
3 Definitions . 6
4 (VOID) . 6
5 Test Methodologies for Immersive Audio Systems of TS 26.118 (Codec Quality Characterization
Test) . 6
5.1 Introduction . 6
5.2 Experimental Design . 7
5.3 Selection of Assessors . 7
5.4 Test Materials . 7
5.5 Content Presentation. 7
5.6 Listening Environment . 7
5.7 Listening System . 7
5.8 Listening Level . 7
5.9 Anchor/Reference Conditions . 7
5.10 Test Conditions . 7
5.11 Attributes . 8
5.12 Test Report and Presentation of Results . 8
6 Test Methodologies for Immersive Audio Systems of TS 26.118 (Renderer Comparison Test) . 8
6.1 Introduction . 8
6.2 Experimental Design . 8
6.3 Selection of Assessors . 8
6.4 Test Materials . 8
6.5 Content Presentation. 9
6.6 Listening Environment . 10
6.7 Listening System . 10
6.8 Listening Level . 11
6.9 Anchor/Reference Conditions . 11
6.10 Test Conditions . 11
6.11 Attributes . 11
6.12 Test Report and Presentation of Results . 11
7 Test Methodologies for Immersive Audio Systems of TS 26.118 (Codec Quality Characterization
Test with Binaural Rendering) . 12
7.1 Introduction . 12
7.2 Experimental Design . 12
7.3 Selection of Assessors . 12
7.4 Test Materials . 12
7.5 Content Presentation. 12
7.6 Listening Environment . 12
7.7 Listening System . 12
7.8 Listening Level . 13
7.9 Anchor/Reference Conditions . 13
7.10 Test Conditions . 13
7.11 Attributes . 13
7.12 Test Report and Presentation of Results . 13
Annex A (informative): Change history . 14
ETSI
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3GPP TS 26.259 version 15.0.0 Release 15 4 ETSI TS 126 259 V15.0.0 (2018-10)
History . 15
ETSI
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3GPP TS 26.259 version 15.0.0 Release 15 5 ETSI TS 126 259 V15.0.0 (2018-10)
Foreword
This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.
Introduction
Audio is a key component of an immersive multimedia experience and 3GPP systems are expected to deliver immersive
audio with a high Quality of Experience. However, industry agreed methods to assess the Quality of Experience for
immersive audio are relatively few and this Technical Specification seeks to address this gap by providing subjective
test methods for the assessment of immersive audio.
ETSI
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3GPP TS 26.259 version 15.0.0 Release 15 6 ETSI TS 126 259 V15.0.0 (2018-10)
1 Scope
The present document specifies subjective test methodologies for 3GPP immersive audio systems including channel-
based, object-based, scene-based and hybrids of these formats. The subjective evaluation methods described in the
present document are applicable to audio capture, coding, transmission and rendering as indicated in their
corresponding clauses.
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including
a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same
Release as the present document.
[1] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".
[2] ITU-R Recommendation BS.1534-3: "Method for the subjective assessment of intermediate
quality level of audio systems".
[3] ITU-R Recommendation BS.1116-3: "Methods for the subjective assessment of small impairments
in audio systems".
[4] ITU-R Recommendation BS.2051-2: "Advance sound system for programme production".
[5] 3GPP TS 26.118: "3GPP Virtual reality profiles for streaming applications".
3 Definitions
For the purposes of the present document, the terms and definitions given in 3GPP TR 21.905 [1] and the following
apply. A term defined in the present document takes precedence over the definition of the same term, if any, in 3GPP
TR 21.905 [1].
4 (VOID)
This clause is left "Void" intentionally, since specific clauses of the present document have been used and referenced
during the characterization exercise related to the 3GPP Virtual Reality Audio profile; therefore, a clause renumbering
would misalign such specific references from other 3GPP specifications.
5 Test Methodologies for Immersive Audio Systems of
TS 26.118 (Codec Quality Characterization Test)
5.1 Introduction
This clause specifies the Codec Quality Characterization Test for the audio profiles in TS 26.118. The Codec Quality
Characterization Test is based on the test method defined in [2]. The Codec Quality Characterization Test assesses the
Basic Audio Quality attribute at different bit-rates for a given audio profile.
ETSI
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3GPP TS 26.259 version 15.0.0
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