ETSI TS 102 924-2018 Speech and multimedia Transmission Quality (STQ) Transmission requirements for Superwideband Fullband headset terminals from a QoS perspective as perceived by .pdf

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1、 ETSI TS 102 924 V1.2.1 (2018-03) Speech and multimedia Transmission Quality (STQ); Transmission requirements for Super-Wideband / Fullband handset and headset terminals from a QoS perspective as perceived by the user TECHNICAL SPECIFICATION ETSI ETSI TS 102 924 V1.2.1 (2018-03)2 Reference RTS/STQ-2

2、08-1 Keywords QoS, terminal 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-Prfecture de Grasse (06) N 7803/88 Important notice The present documen

3、t 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 be modified without the prior written authorization of ETSI. In case

4、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 Secretariat. Users of the present document should be aware that the document

5、 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, please send your comment to one of the following services: https:/porta

6、l.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 permission of ETSI. The content of the PDF version shall not be modifie

7、d 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 registered for the benefit of its Members. 3GPPTM and LTETMare trademarks

8、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. ETSI ETSI TS 102 924 V1.2.1 (2018-03)3 Contents Intellectual Property Ri

9、ghts 5g3Foreword . 5g3Modal verbs terminology 5g3Introduction 5g31 Scope 6g32 References 6g32.1 Normative references . 6g32.2 Informative references 8g33 Definitions and abbreviations . 8g33.1 Definitions 8g33.2 Abbreviations . 9g34 Applications and coder considerations . 9g34.1 Applications . 9g34.

10、2 Coder considerations 10g34.2.0 Premise . 10g34.2.1 Super-wideband (SWB) 10g34.2.2 Fullband (FB) 11g35 Test considerations and test equipment 12g35.0 Introduction 12g35.1 IP half channel measurement adaptor . 12g35.2 Environmental conditions for tests . 12g35.3 Accuracy of measurements and test sig

11、nal generation . 13g35.4 Network impairment simulation . 13g35.5 Acoustic environment . 14g35.6 Verification of the environmental conditions . 15g35.7 Influence of terminal delay on measurements 15g35.8 Specific test considerations 15g35.8.0 Premise . 15g35.8.1 Loudness rating and Loudness 16g35.8.1

12、.1 Loudness Rating 16g35.8.1.2 Loudness . 16g35.8.2 Binaural listening 16g36 Requirements considerations and associated measurement Methodologies 16g36.1 Considerations 16g36.2 Test setup 17g36.2.1 General 17g36.2.2 Setup for handsets and headsets 17g36.2.3 Position and calibration of HATS . 18g36.2

13、.4 Test signal and test signal levels . 18g36.2.5 Setup of background noise simulation 18g36.2.6 Setup of variable echo path . 19g36.3 Coding independent parameters . 20g36.3.1 Send frequency response 20g36.3.2 Send Loudness Rating (SLR) 23g36.3.3 Mic mute . 23g36.3.4 Linearity range of SLR . 24g36.

14、3.5 Send Distortion . 24g36.3.5.1 Signal to harmonic distortion versus frequency 24g36.3.5.2 Signal to harmonic distortion for higher input level . 25g36.3.6 Send Noise 26g36.3.7 Sidetone Masking Rating STMR (Mouth to ear) 26g36.3.8 Sidetone delay . 27g3ETSI ETSI TS 102 924 V1.2.1 (2018-03)4 6.3.9 T

15、erminal Coupling Loss (TCL) 27g36.3.10 Stability loss 28g36.4 Receive parameters. 29g36.4.1 Equalization 29g36.4.2 Receive Frequency response . 29g36.4.3 Receive Loudness Rating (monaural reproduction) 32g36.4.4 RLR for stereo/dichotic reproduction . 32g36.4.5 Loudness . 32g36.4.6 Receive Distortion

16、 32g36.4.7 Minimum activation level and sensitivity in Receive direction 33g36.4.8 Receive Noise . 33g36.4.9 Automatic level control in receiving . 34g36.4.10 Double talk performance 34g36.4.10.1 General 34g36.4.10.2 Attenuation range in send direction during double talk AH,S,dt34g36.4.10.3 Attenuat

17、ion range in receive direction during double talk AH,R,dt35g36.4.10.4 Detection of echo components during double talk 36g36.4.11 Switching characteristics 37g36.4.11.1 Note . 37g36.4.11.2 Activation in send direction 38g36.4.11.3 Silence suppression and comfort noise generation 38g36.4.12 Speech and

18、 audio quality in presence of noise 38g36.4.12.1 Performance in send in the presence of background noise 38g36.4.12.2 Speech quality in the presence of background noise . 39g36.4.12.3 Quality of background noise transmission (with far end speech) 40g36.4.13 Quality of echo cancellation . 41g36.4.13.

19、1 Temporal echo effects . 41g36.4.13.2 Spectral echo attenuation 41g36.4.13.3 Occurrence of artefacts . 42g36.4.13.4 Variable echo path. 42g36.4.14 Variant impairments; network dependant . 42g36.4.14.1 Clock accuracy send 42g36.4.14.2 Clock accuracy receive . 43g36.4.14.3 Send packet delay variation

20、. 43g36.4.15 Send and receive delay - round trip delay . 44g36.5 Other parameters 45g36.5.1 Objective listening quality 45g36.5.2 Quality of jitter buffer adjustment 46g3Annex A: Void 48g3History 49g3ETSI ETSI TS 102 924 V1.2.1 (2018-03)5 Intellectual Property Rights Essential patents IPRs essential

21、 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

22、 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 (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guara

23、ntee 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. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or reg

24、istered 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 reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of prod

25、ucts, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Speech and multimedia Transmission Quality (STQ). Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “

26、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. Introduction Speech te

27、rminals are currently implementing narrowband and wideband bandwidth. Terminal equipment may offer wider bandwidth, due to features already available in these terminals. Such equipment may implement conversational features that may benefit of the electroacoustic equipment already available in the te

28、rminal and may provide wider quality for the end users. The present document is intended to provide initial requirements and test methods for such type of equipment. ETSI ETSI TS 102 924 V1.2.1 (2018-03)6 1 Scope The present document provides speech A sound field reproduction method for terminal tes

29、ting including a background noise database“. 12 ETSI ES 202 739: “Speech and multimedia Transmission Quality (STQ);Transmission requirements for wideband VoIP terminals (handset and headset) from a QoS perspective as perceived by the user“. 13 ETSI TS 103 739: “Speech and multimedia Transmission Qua

30、lity (STQ); Transmission requirements for wideband wireless terminals (handset and headset) from a QoS perspective as perceived by the user“. 14 Recommendation ITU-T P.863: “Perceptual objective listening quality assessment“. 15 Recommendation ITU-T P.380: “Electro-acoustic measurements on headsets“

31、. 16 IEC 61260-1: “Electroacoustics - Octave-band and fractional-octave-band filters - Part 1: Specifications“. 17 Void. 18 Void. 19 Recommendation ITU-T G.722: “7 kHz audio-coding within 64 kbit/s“. 20 Void. 21 Recommendation ITU-T G.711.1 (annex F): “Wideband embedded extension for G.711 pulse cod

32、e modulation“. 22 Recommendation ITU-T P.57: “Artificial ears“. 23 Recommendation ITU-T P.64: “Determination of sensitivity/frequency characteristics of local telephone systems“. 24 ISO 3745: “Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressu

33、re - Precision methods for anechoic rooms and hemi-anechoic rooms“. 25 ETSI TR 126 952: “Universal Mobile Telecommunications System (UMTS); LTE; Codec for Enhanced Voice Services (EVS); Performance characterization (3GPP TR 26.952 version 12.2.0 Release 12)“. 26 ETSI TS 126 441: “Universal Mobile Te

34、lecommunications System (UMTS); LTE; Codec for Enhanced Voice Services (EVS); General overview (3GPP TS 26.441)“. 27 Recommendation ITU-T P.56: “Objective measurement of active speech level“. ETSI ETSI TS 102 924 V1.2.1 (2018-03)8 28 ETSI TS 103 281: “Speech and multimedia Transmission Quality (STQ)

35、; Speech quality in the presence of background noise: Objective test methods for super-wideband and fullband terminals“. 29 Recommendation ITU-T G.122: “Influence of national systems on stability and talker echo in international connections“. 30 Recommendation ITU-T P.340: “Transmission characterist

36、ics and speech quality parameters of hands-free terminals“. 31 Recommendation ITU-T P.502: “Objective test methods for speech communication systems using complex test signals“. 32 Recommendation ITU-T P.863.1: “Application Guide for Recommendation ITU-T P.863“. 33 Recommendation ITU-T P.1010: “Funda

37、mental voice transmission objectives for VoIP terminals and gateways“. 34 IETF RFC 3550: “RTP: A Transport Protocol for Real-Time Applications“. 35 ETSI ES 202 737: “Speech and multimedia Transmission Quality (STQ); Transmission requirements for narrowband VoIP terminals (handset and headset) from a

38、 QoS perspective as perceived by the user“. 36 IETF RFC 6716: “Definition of the Opus Audio Codec“. 2.2 Informative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version a

39、pplies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are not

40、necessary for the application of the present document but they assist the user with regard to a particular subject area. i.1 ISO 532: “Acoustics - Method for calculating loudness level“. i.2 NIST NetTM. NOTE: Available at https:/www-x.antd.nist.gov/itg/nistnet/. i.3 NetemTM. NOTE: Available at http:

41、/www.linuxfoundation.org/en/Net:Netem. i.4 Trace Control for Netem (TCN) (2006): “Trace Control for Netem, Semester Thesis SA-2006-15“, ETH Zrich, A. Keller. i.5 ETSI EG 202 425: “Speech Processing, Transmission and Quality Aspects (STQ); Definition and implementation of VoIP reference point“. i.6 S

42、TQ(15)48-0309: “Objective Codec Evaluation of EVS. HEAD acoustics GmbH“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: binaural listening: both ears are involved for the perception of sound ETSI ETSI TS 102 924 V1

43、.2.1 (2018-03)9 dichotic: relating to or involving the presentation of a stimulus to one ear that differs in some respect (as pitch, loudness, frequency, or energy) from a stimulus presented to the other ear diotic: pertaining to or affecting both ears (same signal in both ears) dual channel mode: a

44、udio mode, in which two audio channels with independent programme contents (e.g. bilingual) are encoded within one audio bit stream fullband bandwidth: transmission of speech with a nominal bandwidth of 20 Hz - 20 kHz stereo mode: audio mode in which two channels forming a stereo pair (left and righ

45、t) are encoded within one bit stream and for which the coding process is the same as for the Dual channel mode super-wideband: transmission with supre-wideband bandwith which may cover at least mono capabilities. Stereo capabilities may be possible super-wideband bandwidth: transmission of speech wi

46、th a nominal pass-band wider than 100 Hz to 7 000 Hz, usually understood to be 50 Hz - 14 000 Hz (definition from Recommendation ITU-T P.10 /G.100 2) 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: ACR Absolute Category Rating DRP ear Drum Reference Poi

47、nt ERP Ear reference Point EVS Enhanced Voice Services FB FullBand GAT Group Audio Terminal G-MOS-LQOFOverall Quality Mean Opinion Score, Listening Quality Objective, fullband HATS Head and Torso Simulator MCU Multiplexing Control Unit MRP Mouth Reference PointMS Mid-sized StereoN-MOS-LQOFNoise Qual

48、ity Mean Opinion Score, Listening Quality Objective, fullband POI Point Of Interconnection SLR Send Loudness Rating S-MOS-LQOFSpeech Quality Mean Opinion Score, Listening Quality Objective, fullband SWB Super-WideBand TCL Terminal Echo Loss 4 Applications and coder considerations 4.1 Applications Th

49、e following applications are within the scope of the present document: Speech and audio communication including conferencing using high quality hands free systems, for which super-wideband/fullband coding can better reproduce the audio environment and provide improved quality and audio immersion. These applications cover also GATs (Group Audio Terminals) and teleconference systems such as “Telepresence“. Bandwidth extension which may allow usage for some mixed content applications where wider bandwidth co