ETSI EG 202 396-3 V1.7.1 (2018-05) - iTeh Standards

ETSI EG 202 396-3 V1.7.1 (2018-03)

ETSI GUIDE

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(STQ); -

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ETSI EG 202 396-3 V1.7.1 (2018-03)

Reference REG/STQ-270

Keywords noise, QoS, quality, speech

ETSI

650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE

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ETSI EG 202 396-3 V1.7.1 (2018-03)

Contents

Intellectual Property Rights ................................................................................................................................5

Foreword ............................................................................................................................................................. 5

Modal verbs terminology....................................................................................................................................5

1 Scope ........................................................................................................................................................6

2 References ................................................................................................................................................6

2.1

Normative references .........................................................................................................................................6

2.2

Informative references........................................................................................................................................6

3 Symbols and abbreviations.......................................................................................................................8

3.1

Symbols ..............................................................................................................................................................8

3.2

Abbreviations .....................................................................................................................................................8

4 Speech signals to be used .........................................................................................................................9

5 Selection of the data within the scope of the wideband objective model: Experts evaluation...............10

5.1

Selection process ..............................................................................................................................................10

5.2

Results ..............................................................................................................................................................10

5.3

EW 6 VI 6.1 RE i) 6.2 P .a 6.2.1 ARD .iteh 6.2.2 D ds 6.3 N ar 6.4 TA nd 6.5 h S (sta 6.5.1 iTe 6.5.2

6.5.3 6.6 6.6.1 6.6.2 6.6.3 6.7

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6.7.1

Description of G-MOS Algorithm ..............................................................................................................29

6.7.2

Comparing subjective and objective G-MOS results..................................................................................30

7 Validation of the Wideband Objective Test Method..............................................................................31

7.1

Introduction ......................................................................................................................................................31

7.2

ETSI EG 202 396-2 Database Results Analysis...............................................................................................33

7.2.1

Comparing subjective and objective N-MOS results..................................................................................33

7.2.2

Comparing subjective and objective S-MOS results ..................................................................................33

7.2.3

Comparing Subjective and Objective G-MOS Results ...............................................................................34

7.3

Orange Validation Database results Analysed .................................................................................................35

7.3.0

Introduction................................................................................................................................................. 35

7.3.1

Comparing subjective and objective N-MOS results..................................................................................35

7.3.2

Comparing subjective and objective S-MOS results ..................................................................................35

7.3.3

Comparing Subjective and Objective G-MOS Results ...............................................................................36

8 Objective Model for Narrowband Applications .....................................................................................37

8.0

Introduction ......................................................................................................................................................37

8.1

File pre-processing ...........................................................................................................................................37

8.2

Adaptation of the Calculations .........................................................................................................................38

8.3

Prediction results ..............................................................................................................................................38

Annex A: Detailed post evaluation of listening test results ................................................................40

ETSI

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ETSI EG 202 396-3 V1.7.1 (2018-03)

Annex B: Results of PESQ and TOSQA2001 - Analysis of ETSI EG 202 396-2 database..............43

Annex C:

Comparison of objective MOS versus auditory MOS for the complete STF 294 database .................................................................................................................................50

Annex D: Comparison of objective MOS versus auditory MOS for rejected conditions................52

Annex E: Void ........................................................................................................................................54

Annex F: Detailed STF 294 subjective and objective validation test results....................................55

Annex G: Void ........................................................................................................................................58

Annex H:

Extension of the Speech Quality Test Method to Narrowband: Adaptation, Training and Validation.......................................................................................................59

Annex I:

Void ........................................................................................................................................61

Annex J:

Summary of Czech samples not used for model training..................................................62

J.0 Introduction ............................................................................................................................................62

J.1 Selection process - Czech database ........................................................................................................62

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ETSI

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ETSI EG 202 396-3 V1.7.1 (2018-03)

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 respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server ().

Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document.

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Modal verbs terminology

In the present document "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.

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