EG 201 377-2 : 1.3.1
Current
The latest, up-to-date edition.
SPEECH PROCESSING, TRANSMISSION AND QUALITY ASPECTS (STQ); SPECIFICATION AND MEASUREMENT OF SPEECH TRANSMISSION QUALITY; PART 2: MOUTH-TO-EAR SPEECH TRANSMISSION QUALITY INCLUDING TERMINALS
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English
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Foreword
Introduction
1 Scope
2 References
3 Definitions and abbreviations
3.1 Definitions
3.2 Abbreviations
4 General considerations for end-to-end speech quality evaluations
5 Test configurations
5.1 Test setup for terminals
5.2 Setup of the electrical interfaces
5.3 Test signals
5.4 Accuracy of test equipment
6 Test conditions
6.1 Acoustic environment
6.2 Network conditions, general
7 Measurement of "standard" parameters
7.1 Sending frequency response
7.2 Receiving frequency response
7.3 Overall frequency response
7.4 Sending (and connection) loudness rating
7.5 Receiving (and connection) loudness rating
7.6 Overall loudness rating
7.7 Sidetone masking rating
7.8 Listener sidetone
7.9 Measurement and calculation of the value of the
D-factor (DelSM)
7.10 Delay
7.11 Terminal coupling loss
7.12 Talker echo loudness rating
7.13 Weighted echo path loss
7.14 Distortion
7.15 Sensitivity against out-of-band signals in sending
7.16 Spurious out-of-band signals in receiving
8 Advanced measurement procedures, taking into account the
conversational situation
8.1 Measurement setup for objective tests
8.2 Practical realization of test signals
8.3 Quality of background noise transmission
8.4 Double talk performance
8.5 Switching characteristics
8.6 Level adjustments by companding or AGC
8.7 Additional echo disturbances
8.8 Speech sound quality
Annex A (informative): Bibliography
History
Sums up and gives guidance about the main factors that affect speech quality in end-to-end scenarios; and specifies test methods for end-to-end speech quality testing.
| Committee |
STQ
|
| DocumentType |
Standard
|
| Pages |
50
|
| PublisherName |
European Telecommunications Standards Institute
|
| Status |
Current
|
| ES 202 718 : 1.2.1 | SPEECH AND MULTIMEDIA TRANSMISSION QUALITY (STQ); TRANSMISSION REQUIREMENTS FOR IP-BASED NARROWBAND AND WIDEBAND HOME AND NETWORK MEDIA GATEWAYS FROM A QOS PERSPECTIVE AS PERCEIVED BY THE USER |
| TR 102 648-1 : 1.1.1 | SPEECH PROCESSING, TRANSMISSION AND QUALITY ASPECTS (STQ); TEST METHODOLOGIES FOR ETSI TEST EVENTS AND RESULTS; PART 1: VOIP SPEECH QUALITY TESTING |
| TR 102 521 : 1.1.1 | SPEECH PROCESSING, TRANSMISSION AND QUALITY ASPECTS (STQ); SUPPORT TO TC EMTEL FOR QOS AND TRANSMISSION QUALITY ASPECTS FOR END-TO-END SERVICES |
| TR 102 251 : 1.1.1 | SPEECH PROCESSING, TRANSMISSION AND QUALITY ASPECTS (STQ); ANONYMOUS TEST REPORT FROM 2ND SPEECH QUALITY TEST EVENT 2002 |
| ISO 3:1973 | Preferred numbers Series of preferred numbers |
| EN 300 969 : 8.0.1 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) - HALF RATE SPEECH - HALF RATE SPEECH TRANSCODING |
| EG 201 050 : 1.2.2 | SPEECH PROCESSING, TRANSMISSION AND QUALITY ASPECTS (STQ) - OVERALL TRANSMISSION PLAN ASPECTS FOR TELEPHONY IN A PRIVATE NETWORK |
| TR 101 110 : 8.0.0 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) (GSM); CHARACTERISATION; TEST METHODS AND QUALITY ASSESSMENT FOR HANDSFREE MOBILE STATIONS (MSS) |
| TIA/EIA 810 : B2006 | TELECOMMUNICATIONS TELEPHONE TERMINAL EQUIPMENT TRANSMISSION REQUIREMENTS FOR NARROWBAND DIGITAL TELEPHONES |
| EN 300 903 : 8.1.1 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) - TRANSMISSION PLANNING ASPECTS OF THE SPEECH SERVICE IN THE GSM PUBLIC LAND MOBILE NETWORK (PLMN) SYSTEM (GSM 03.50 VERSION 8.1.1 RELEASE 1999) |
| TS 100 961 : 8.2.0 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+); FULL RATE SPEECH; TRANSCODING |
| TBR 008 : 20002 | INTEGRATED SERVICES DIGITAL NETWORK (ISDN) - TELEPHONY 3,1 kHz TELESERVICE - ATTACHMENT REQUIREMENTS FOR HANDSET TERMINALS |
| EN 300 726 : 8.0.1 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) - ENHANCED FULL RATE (EFR) SPEECH TRANSCODING |
| IEC 61260:1995 | Electroacoustics - Octave-band and fractional-octave-band filters |
| EG 201 377-1 : 1.3.2 | 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 |
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