ETSI TR 146 055-2018 Digital cellular telecommunications system (Phase 2+) (GSM) Performance characterization of the GSM Enhanced Full Rate (EFR) speech codec (V15 0 0 3GPP TR 46 0.pdf
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1、 ETSI TR 146 055 V15.0.0 (2018-07) Digital cellular telecommunications system (Phase 2+) (GSM); Performance characterization of the GSM Enhanced Full Rate (EFR) speech codec (3GPP TR 46.055 version 15.0.0 Release 15) TECHNICAL REPORT GLOBAL SYSTEM FOR MOBILE COMMUNICATIONSRETSI ETSI TR 146 055 V15.0
2、.0 (2018-07)13GPP TR 46.055 version 15.0.0 Release 15Reference RTR/TSGS-0446055vf00 Keywords GSM ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Pr
3、fecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not
4、be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secreta
5、riat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at https:/portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present document, pl
6、ease send your comment to one of the following services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written pe
7、rmission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. ETSI 2018. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trademarks of ETSI regis
8、tered for the benefit of its Members. 3GPPTM and LTETMare trademarks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members. GSMand the GSM logo are trademarks registered and owned by the GSM Association. ETS
9、I ETSI TR 146 055 V15.0.0 (2018-07)23GPP TR 46.055 version 15.0.0 Release 15Intellectual 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 availab
10、le 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
11、(https:/ipr.etsi.org/). 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,
12、essential to the present document. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no right to use or reprodu
13、ce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Report (TR) has been produced by ETSI 3rd Generation Partnership Project
14、(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
15、 found under http:/webapp.etsi.org/key/queryform.asp. 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 prov
16、isions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 146 055 V15.0.0 (2018-07)33GPP TR 46.055 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g3Introduction 5g31 Sc
17、ope 7g32 References 7g33 Abbreviations . 7g34 Quality under error (EP0 EP3) and tandeming conditions (Exp Number 1 and Exp Number 5) 8g35 Quality under background noise conditions (Exp Number 2 and Exp Number 3) . 9g36 Talker dependency (Exp Number 4) 9g37 DTX system 9g37.1 Channel activity in DTX m
18、ode . 9g37.1.1 Test procedure 9g37.1.2 Speech channel activity 9g37.1.3 Level compensation 9g37.1.4 Interleaving compensation 9g37.1.5 Estimated mean TDMA channel activity 10g37.2 DTX/CNI Informal Expert Listening tests . 10g37.2.1 Introduction. 10g37.2.2 Test environment 10g37.2.3 Results 10g38 Per
19、formance with DTMF tones 10g38.1 Introduction 10g38.2 Test environment 10g38.3 Results 11g39 Network information tones . 11g310 Performance with special input signals 12g310.1 Music signals 12g310.2 Noise signals 13g311 Performance with different languages 13g312 Delay 14g313 Frequency response 17g3
20、13.1 Introduction 17g313.2 Test environment 17g313.3 Results 17g314 Complexity . 17g315 Summary of the results from the subjective testing . 18g3Annex A: Summary of results (lab by lab) 20g3A.1 Quality under Error and tandeming conditions 20g3A.2 Quality under Background noise conditions 22g3A.3 Qua
21、lity for Talker Dependency (DMOS and SD) 23g3Annex B: Change history 24g3History 25g3ETSI ETSI TR 146 055 V15.0.0 (2018-07)43GPP TR 46.055 version 15.0.0 Release 15Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present doc
22、ument 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
23、: 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 in
24、cremented when editorial only changes have been incorporated in the document. ETSI ETSI TR 146 055 V15.0.0 (2018-07)53GPP TR 46.055 version 15.0.0 Release 15Introduction The SMG2-Speech experts Group (SEG) started its activity early in 1995 for the standardization of an Enhanced Full Rate speech cod
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