1、 ETSI TS 103 737 V1.1.2 (2010-08)Technical Specification Speech and multimedia Transmission Quality (STQ); Transmission requirements for narrowband wireless terminals (handset and headset) from a QoS perspective as perceived by the userETSI ETSI TS 103 737 V1.1.2 (2010-08)2Reference RTS/STQ-00166-1
2、Keywords speech, 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 Individual copies of
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5、his and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be reproduced except as au
6、thorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2010. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTM, TIPHONTM, the TIPHON logo and the ETSI logo are Trade Marks of ETSI registered for
7、the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. LTE is a Trade Mark of ETSI currently being registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade
8、Marks registered and owned by the GSM Association. ETSI ETSI TS 103 737 V1.1.2 (2010-08)3Contents Intellectual Property Rights 5g3Foreword . 5g3Introduction 5g31 Scope 6g32 References 6g32.1 Normative references . 6g32.2 Informative references 7g33 Definitions and abbreviations . 8g33.1 Definitions
9、8g33.2 Abbreviations . 8g34 Configurations and interfaces . 9g34.1 Access networks . 9g34.2 Additional (radio) links between the terminal and external electroacoustical devices . 9g35 Test Configurations 9g35.1 Set-up interface 9g35.2 Set-up for terminals 10g35.3 Acoustical environment 10g35.4 Test
10、signals . 11g35.5 Calibration 11g35.6 Environmental conditions for tests . 12g35.7 Accuracy of test equipment 13g35.8 Power feeding . 13g35.9 Influence of terminal delay on measurements 13g36 Codec independent requirements and associated Measurement Methodologies 13g36.1 Send and receive frequency r
11、esponse . 13g36.1.1 Send frequency response 13g36.1.2 Receive frequency response 15g36.2 Send and receive loudness ratings 18g36.2.1 Send Loudness Rating (SLR) 18g36.2.2 Receive Loudness Rating (RLR) 18g36.2.3 LR stability . 19g36.3 Sidetone parameters . 19g36.3.1 SideTone Masking Rating (STMR) 19g3
12、6.3.2 Sidetone delay . 19g36.3.3 D-factor . 20g36.4 Send and receive noise . 20g36.4.1 Send noise. 20g36.4.2 Receive noise 21g36.5 Send and receive distortion 21g36.5.1 Send Distortion . 21g36.5.2 Receive distortion . 22g36.6 Stability loss and TCLw . 22g36.6.1 Stability loss 22g36.6.2 TCLw (or simi
13、lar parameters) 23g36.7 Double talk performance 24g36.7.1 Attenuation Range in Send Direction during Double Talk AH,S,dt. 24g36.7.2 Attenuation Range in Receive Direction during Double Talk AH,R,dt. 26g36.7.3 Detection of echo components during double Talk 27g36.7.4 Minimum activation level and sens
14、itivity of double talk detection 28g36.8 Switching parameters . 29g36.8.1 Activation in Send Direction 29g36.8.2 Minimum activation level and sensitivity in Receive direction 30g3ETSI ETSI TS 103 737 V1.1.2 (2010-08)46.8.3 Automatic level control 30g36.8.4 Silence Suppression and Comfort Noise Gener
15、ation 30g36.9 Background noise performance 30g36.9.1 Performance in send direction in the presence of background noise 30g36.9.2 Speech Quality in the Presence of Background Noise 31g36.9.3 Quality of Background Noise Transmission (with Far End Speech) 32g36.9.4 Quality of Background Noise Transmiss
16、ion (with Near End Speech) 32g36.10 Quality of echo cancellation . 33g36.10.1 Temporal echo effects . 33g36.10.2 Spectral Echo Attenuation 33g36.10.3 Occurrence of Artifacts . 34g36.11 Send and receive delay - Round trip delay . 34g36.12 Objective listening Quality in send and receive direction 35g3
17、7 Codec dependent requirements and associated Measurement Methodologies . 36g37.1 Speech Coders 36g37.2 Send and receive delay or round trip delay 36g37.3 Objective listening Quality in send and receive direction 36g38 Requirements and associated Measurement Methodologies (with an additional radio l
18、ink between the terminal and external electroacoustical devices) 36g3Annex A (informative): D-Factor 37g3Annex B (informative): Bibliography . 38g3History 39g3ETSI ETSI TS 103 737 V1.1.2 (2010-08)5Intellectual Property Rights IPRs essential or potentially essential to the present document may have b
19、een 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
20、“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). 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 I
21、PRs 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. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Speech and multimedia Transmission Quality (STQ). Introductio
22、n The present document covers wireless speech terminals. It aims to enhance the interoperability and end-to-end quality with all other types of terminals. ETSI ETSI TS 103 737 V1.1.2 (2010-08)61 Scope The present document provides speech transmission performance requirements for wireless terminals;
23、it addresses all types of wireless terminals, including softphones. This part addresses handset and headset functions of narrow-band wireless terminals. In contrast to other standards which define minimum performance requirements it is the intention of the present document to specify terminal equipm
24、ent requirements which 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
25、external electroacoustical devices is used (e.g. Bluetooth link), the standard will address the overall quality In the present document objective measurement methodologies and requirements for wireless speech terminals are given. In addition to basic testing procedures, the present document describe
26、s advanced 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,
27、conversational performance, as well as the use in noisy environment. 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). Terminals which
28、 are not intended to be connected to public networks are outside the scope of the present document. 2 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 applies. For no
29、n-specific references, the latest version of the reference document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause wer
30、e valid at the time of publication ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are necessary for the application of the present document. 1 ITU-T Recommendation P.50: “Artificial voices“. 2 ITU-T Recommendation P.56: “Objective measurem
31、ent of active speech level“. 3 ITU-T Recommendation P.57: “Artificial ears“. 4 ITU-T Recommendation P.58: “Head and torso simulator for telephonometry“. 5 ITU-T Recommendation P.64: “Determination of sensitivity/frequency characteristics of local telephone systems“. 6 ITU-T Recommendation P.79: “Cal
32、culation of loudness ratings for telephone sets“. ETSI ETSI TS 103 737 V1.1.2 (2010-08)77 ITU-T Recommendation P.310: “Transmission characteristics for telephone band (300-3400 Hz) digital telephones“. 8 ITU-T Recommendation P.340: “Transmission characteristics and speech quality parameters of hands
33、-free terminals“. 9 ITU-T Recommendation P.380: “Electro-acoustic measurements on headsets“. 10 ITU-T Recommendation P.501: “Test signals for use in telephonometry“. 11 ITU-T Recommendation P.502: “Objective test methods for speech communication systems using complex test signals“. 12 ITU-T Recommen
34、dation P.581: “Use of head and torso simulator (HATS) for hands-free terminal testing“. 13 ITU-T Recommendation G.122: “Influence of national systems on stability and talker echo in international connections“. 14 IEC 61260: “Electroacoustics - Octave-band and fractional-octave-band filters“. 15 ISO
35、3 (1973): “Preferred numbers - Series of preferred numbers“. 16 IEC 61672-1: “Electroacoustics - Sound level meters - Part 1: Specifications“. 17 ETSI TS 126 171: “ Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); AMR speech codec, wideband; G
36、eneral description (3GPP TS 26.171 version 6.0.0 Release 6)“ . 18 ITU-T Recommendation G.729.1: “G.729 based Embedded Variable bit-rate coder: An 8-32 kbit/s scalable wideband coder bitstream interoperable with G.729“. 19 ITU-T Recommendation G.711: “Pulse code modulation (PCM) of voice frequencies“
37、. 20 ITU-T Recommendation G.726: “40, 32, 24, 16 kbit/s Adaptive Differential Pulse Code Modulation (ADPCM)“. 21 ITU-T Recommendation G.729: “Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear prediction (CS-ACELP)“. 22 ETSI TS 146 060: “Digital cellular telecommuni
38、cations system (Phase 2+); Enhanced Full Rate (EFR) speech transcoding (3GPP TS 46.060)“. 23 ETSI TS 146 010: “Digital cellular telecommunications system (Phase 2+); Full-rate speech; Transcoding (3GPP TS 46.010)“. 2.2 Informative references The following referenced documents are not necessary for t
39、he application of the present document but they assist the user with regard to a particular subject area. i.1 ETSI EG 202 396-1: “Speech and multimedia Transmission Quality (STQ); Speech quality performance in the presence of background noise; Part 1: Background noise simulation technique and backgr
40、ound noise database“. i.2 ETSI EG 202 396-3: “Speech Processing, Transmission and Quality Aspects (STQ); Speech Quality performance in the presence of background noise Part 3: Background noise transmission - Objective test methods“. ETSI ETSI TS 103 737 V1.1.2 (2010-08)83 Definitions and abbreviatio
41、ns 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: artificial ear: device for the calibration of earphones incorporating an acoustic coupler and a calibrated microphone for the measurement of the sound pressure and having an overall acoustic imped
42、ance similar to that of the median adult human ear over a given frequency band codec: combination of an analogue-to-digital encoder and a digital-to-analogue decoder operating in opposite directions of transmission in the same equipment diffuse field equalization: equalization of the HATS sound pick
43、-up, equalization of the difference, in dB, between the spectrum level of the acoustic pressure at the ear Drum Reference Point (DRP) and the spectrum level of the acoustic pressure at the HATS Reference Point (HRP) in a diffuse sound field with the HATS absent by applying the reverse nominal curve
44、of table 3 of ITU-T Recommendation P.58 4 echo loss: semi-loop loss averaged with 1/f power weighting over the telephone band, in accordance with ITU-T Recommendation G.122 13, clause 4 Head And Torso Simulator (HATS) for telephonometry: manikin extending downward from the top of the head to the wai
45、st, designed to simulate the sound pick-up characteristics and the acoustic diffraction produced by a median human adult and to reproduce the acoustic field generated by the human mouth Mouth Reference Point (MRP): is located on axis and 25 mm in front of the lip plane of a mouth simulator nominal s
46、etting of the volume control: when a receive volume control is provided, the setting which is closest to the nominal RLR of 2 dB 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: CDMA Code Division Multiple Access CSS Composite Source Signal D D-Value of
47、Terminal DECT Digital Enhanced Cordless Telecommunications DRP ear Drum Reference Point EL Echo Loss ERP Ear Reference Point G-MOS Global mean opinion score GSM Global Service for Mobile communication HATS Head And Torso Simulator HRP HATS Reference Point LQOw listening quality, objective, wideband
48、MRP Mouth Reference Point N-MOS Noise mean opinion score PLC Packet Loss Concealment POI Point Of Interconnect QoS Quality of Service RLR Receive Loudness Rating SLR Send Loudness Rating S-MOS Speech mean opinion score STMR SideTone Masking Rating TCLw Terminal Coupling Loss (weighted) UMTS Universa
49、l Mobile Telecommunications System WIFI Wireless Fidelity WIMAX Worldwide Interoperability Microwave Access ETSI ETSI TS 103 737 V1.1.2 (2010-08)94 Configurations and interfaces The present document is intended to be applicable for different wireless access networks and for additional radio links. 4.1 Access networks The present document applies to any wireless terminal whatever the network access, e.g. GSM, UMTS, DECT, Bluetooth, WIFI, WIMAX, CDMA. 4.2 Additional (radio) links between the terminal and external electroacou
