1、 ETSI TS 103 334 V1.1.1 (2018-01) Speech and multimedia Transmission Quality (STQ); Transmission requirements for wearable wireless terminals from a QoS perspective as perceived by the user TECHNICAL SPECIFICATION ETSI ETSI TS 103 334 V1.1.1 (2018-01)2Reference DTS/STQ-240 Keywords speech, terminal
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7、ization 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 LTE are trademarks of ETSI registered for the be
8、nefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members. GSM and the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI TS 103 334 V1.1.1 (2018-01)3Contents Intellectual Property Rights 5g3Foreword . 5g3Modal v
9、erbs terminology 5g3Introduction 5g31 Scope 6g32 References 6g32.1 Normative references . 6g32.2 Informative references 7g33 Definitions and abbreviations . 8g33.1 Definitions 8g33.2 Abbreviations . 8g34 Configurations and interfaces . 9g34.1 Access networks . 9g34.2 Additional (radio) links between
10、 the terminal and external electroacoustical devices . 9g35 Test Configurations 10g35.1 Set-up interface 10g35.2 Set-up for terminals 10g35.2.1 Introduction. 10g35.2.2 Wrist-worn terminal 10g35.2.3 Additional wearable styles 11g35.3 Acoustical environment 11g35.4 Test signals . 12g35.5 Calibration a
11、nd test signal level . 12g35.5.1 Send 12g35.5.2 Receive . 13g35.5.3 Setup of background noise simulation 13g35.6 Environmental conditions for tests . 14g35.7 Accuracy of test equipment 14g35.8 Power feeding conditions . 15g35.9 Influence of terminal delay on measurements 15g36 Codec independent requ
12、irements and associated Measurement Methodologies 15g36.1 Send and receive frequency response . 15g36.1.1 Send frequency response 15g36.1.2 Receive frequency response 16g36.1.2.1 Wrist-worn terminal 16g36.2 Send and receive loudness ratings 18g36.2.1 Send Loudness Ratings . 18g36.2.2 Microphone (Mic
13、) mute 18g36.2.3 Receive Loudness Ratings 19g36.2.3.1 Wrist-worn terminal 19g36.3 Send and receive noise . 19g36.3.1 Send Noise 19g36.3.2 Receive Noise . 20g36.4 Send and receive distortion 20g36.4.1 Introduction. 20g36.4.2 Send distortion 20g36.4.3 Receive distortion . 21g36.5 Terminal Coupling Los
14、s . 22g36.5.1 Wrist-worn Terminal 22g36.6 Stability Loss (or similar parameters) 22g36.7 Double Talk performance . 23g36.7.1 General 23g3ETSI ETSI TS 103 334 V1.1.1 (2018-01)46.7.2 Attenuation Range in Send Direction during Double Talk . 23g36.7.3 Attenuation Range in Receive Direction during Double
15、 Talk 24g36.7.4 Detection of echo components during Double Talk . 25g36.7.5 Minimum activation level and sensitivity of Double Talk detection 26g36.8 Switching parameters . 26g36.8.1 Activation in Send Direction 26g36.8.2 Minimum activation level and sensitivity in Receive direction 27g36.8.3 Automa
16、tic level control 27g36.8.4 Silence Suppression and Comfort Noise Generation 27g36.8.5 Non Linear Processing 27g36.9 Background noise performance 27g36.9.1 Performance in send direction in the presence of background noise 27g36.9.2 Speech Quality in the Presence of Background Noise 28g36.9.3 Quality
17、 of Background Noise Transmission (with Far End Speech) 29g36.10 Quality of echo cancellation . 30g36.10.1 Temporal echo effects . 30g36.10.2 Spectral Echo Attenuation 30g36.10.3 Occurrence of Artefacts 31g36.11 Send and receive delay or round trip delay 31g36.12 Objective listening Quality in send
18、and receive direction 33g37 Codec dependent requirements and associated Measurement Methodologies . 33g37.1 Speech Coders 33g37.2 Objective listening Quality in send and receive direction 33g37.2.1 Objective listening quality MOS-LQO in send direction 33g37.2.2 Objective listening quality MOS-LQO in
19、 receive direction . 34g37.3 Network conditions for electrical-acoustical measurements (speech samples) 35g38 Requirements and associated Measurement Methodologies (with an additional radio link between the terminal and external electroacoustical devices) 35g3Annex A (informative): Bibliography . 36
20、g3History 37g3ETSI ETSI TS 103 334 V1.1.1 (2018-01)5Intellectual Property Rights Essential patents IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and no
21、n-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 (https:/ipr.etsi.org/). Pu
22、rsuant 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 d
23、ocument. 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 reproduce any trademark and/or tr
24、adename. 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 Specification (TS) has been produced by ETSI Technical Committee Speech and multimedia Transmission
25、 Quality (STQ). 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“
26、and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. Introduction The present document covers wireless wearable speech terminals. It aims to enhance the interoperability and end-to-end quality with all other types of terminals. The advanced signal processing of te
27、rminals is targeted to speech signals. Therefore, wherever possible speech signals are used for testing in order to achieve mostly realistic test conditions and meaningful results. ETSI ETSI TS 103 334 V1.1.1 (2018-01)61 Scope The present document provides speech transmission performance requirement
28、s for wireless terminals; it is limited to wearable terminals, including devices worn on the users wrist. Headsets are out of scope. In contrast to other standards which define minimum performance requirements it is the intention of the present document to specify terminal equipment requirements whi
29、ch enable manufacturers and service providers to enable good quality end-to-end speech performance as perceived by the user, whatever be the radio link (terminals may implement different radio links with the access network). When an additional radio link between the terminal and external electroacou
30、stical devices is used (e.g. Bluetoothlink), the standard will address the overall quality. In the present document objective measurement methodologies and requirements for wireless wearable speech terminals are given. In addition to basic testing procedures, the present document describes advanced
31、testing procedures taking into account further quality parameters as perceived by the user. The requirements available in the present document will ensure a high compatibility across access networks with all types of terminals. It is the aim to optimize the listening and talking quality, conversatio
32、nal performance, as well as the use in noisy environments. Related requirements and test methods will be defined in the present document. For all the functions, the standard will consider the limitations in audio performance due to different form factors (e.g. size, shape, wearing style and location
33、). Terminals which are not intended to be connected to public networks are outside the scope of the present document. 2 References 2.1 Normative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific referen
34、ces, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at https:/docbox.etsi.org/Reference. NOTE: Whi
35、le 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 necessary for the application of the present document. 1 ETSI TS 126 171 (V6.0.0): “Digital cellular telecommunications system (Phas
36、e 2 + ); Universal Mobile Telecommunications System (UMTS); AMR speech codec, wideband; General description (3GPP TS 26.171 version 6.0.0 Release 6)“. 2 Recommendation ITU-T G.122: “Influence of national systems on stability and talker echo in international connections“. 3 Recommendation ITU-T G.711
37、: “Pulse code modulation (PCM) of voice frequencies“. 4 Recommendation ITU-T G.726: “40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM)“. 5 Recommendation ITU-T G.729: “Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear prediction (CS-ACELP)“.
38、 ETSI ETSI TS 103 334 V1.1.1 (2018-01)76 Recommendation ITU-T G.729.1: “G.729 based Embedded Variable bit-rate coder: An 8-32 kbit/s scalable wideband coder bitstream interoperable with G.729“. 7 Recommendation ITU-T P.56: “Objective measurement of active speech level“. 8 Recommendation ITU-T P.57:
39、“Artificial ears“. 9 Recommendation ITU-T P.58: “Head and torso simulator for telephonometry“. 10 Recommendation ITU-T P.79: “Calculation of loudness ratings for telephone sets“. 11 Recommendation ITU-T P.340: “Transmission characteristics and speech quality parameters of hands-free terminals“. 12 R
40、ecommendation ITU-T P.342: “Transmission characteristics for narrow-band digital loudspeaking and hands-free telephony terminals“. 13 Recommendation ITU-T P.501: “Test signals for use in telephonometry“. 14 Recommendation ITU-T P.502: “Objective test methods for speech communication systems using co
41、mplex test signals“. 15 Recommendation ITU-T P.581: “Use of head and torso simulator (HATS) for hands-free terminal testing“. 16 Recommendation ITU-T O.41: “Psophometer for use on telephone-type circuits“. 17 IEC 61260: “Electroacoustics - Octave-band and fractional-octave-band filters“. 18 ETSI TS
42、146 010: “Digital cellular telecommunications system (Phase 2+); Full-rate speech; Transcoding (3GPP TS 46.010 Release 9)“. 19 ETSI TS 146 060: “Digital cellular telecommunications system (Phase 2+); Enhanced Full Rate (EFR) speech transcoding (3GPP TS 46.060 Release 9)“. 20 CTIA: “Test Plan for Wir
43、eless Device Over-the-Air Performance, V3.7“. NOTE: Available at: https:/www.ctia.org/docs/default-source/certification/ctia-test-plan-for-wireless-device-over-the-air-performance-ver-3-7.pdf?sfvrsn=2. 21 ETSI TS 103 106 (03-2013) (V1.2.1): “Speech and multimedia Transmission Quality (STQ); Speech q
44、uality performance in the presence of background noise: Background noise transmission for mobile terminals-objective test methods“. 22 ETSI TS 103 224: “Speech and multimedia Transmission Quality (STQ); A sound field reproduction method for terminal testing including a background noise database“. 23
45、 Recommendation ITU-T P.863: “Perceptual objective listening quality assessment“. 24 Recommendation ITU-T P.863.1: “Application guide for Recommendation ITU-T P.863“. 25 ETSI TS 126 441 (V12.0.0): “Universal Mobile Telecommunications System (UMTS); LTE; EVS Codec General Overview (3GPP TS 26.441 ver
46、sion 12.0.0 Release 12)“. 26 Recommendation ITU-T G.722.2: “Wideband coding of speech at around 16 kbit/s using Adaptive Multi-Rate Wideband (AMR-WB)“. 27 Recommendation ITU-T P.1010: “Fundamental voice transmission objectives for VoIP terminals and gateways. 2.2 Informative references References ar
47、e either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. ETSI ETSI TS 103 334
48、V1.1.1 (2018-01)8NOTE: 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 necessary for the application of the present document but they assist the user with regard to a partic
49、ular subject area. i.1 Recommendation ITU-T P.1100: “Narrowband hands-free communication in motor vehicles“. i.2 IEC 61672 (Edition 1.0): “Electroacoustics - Sound level meters“. i.3 ETSI EG 201 377-1: “Speech and multimedia Transmission Quality (STQ); Specification and measurement of speech transmission quality; Part 1: Introduction to objective comparison measurement methods for one-way speech quality across networks“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the f
