TR 101 085 : 8.0.0
Current
The latest, up-to-date edition.
DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+); PERFORMANCE CHARACTERIZATION OF THE GSM ENHANCED FULL RATE (EFR) SPEECH CODEC
Hardcopy , PDF
English
Intellectual Property Rights
Foreword
Introduction
1 Scope
2 References
3 Abbreviations
4 Quality under error (EP0-EP3) and tandeming conditions
(Exp Number 1 and Exp Number 5)
5 Quality under background noise conditions
(Exp Number 2 and Exp Number 3)
6 Talker dependency (Exp Number 4)
7 DTX system
7.1 Channel activity in DTX mode
7.2 DTX/CNI Informal Expert Listening tests
8 Performance with DTMF tones
8.1 Introduction
8.2 Test environment
8.3 Results
9 Network information tones
10 Performance with special input signals
10.1 Music signals
10.2 Noise signals
11 Performance with different languages
12 Delay
13 Frequency response
13.1 Introduction
13.2 Test environment
13.3 Results
14 Complexity
15 Summary of the results from the subjective testing
Annex A: Summary of results (lab by lab)
A.1 Quality under Error and tandeming conditions
A.2 Quality under Background noise conditions
A.3 Quality for Talker Dependency (DMOS and SD)
Annex B: Change Request History
History
Provides information on the performance of the GSM enhanced full rate speech codec. Experimental results from the Pre-selection and verification tests carried out during the standardization process by the SEG (speech Expert Group) reported to give a more detailed picture of behaviour of the GSM enhanced full rate speech codec under different operation conditions.
Committee |
SMG 11
|
DocumentType |
Standard
|
Pages |
27
|
PublisherName |
European Telecommunications Standards Institute
|
Status |
Current
|
ETSI GSM 03.50 : 050000 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2+) - TRANSMISSION PLANNING ASPECTS OF THE SPEECH SERVICE IN THE GSM PUBLIC LAND MOBILE NETWORK (PLMN) |
ETSI GSM 06.10 : 4.0.2 | GSM FULL RATE SPEECH TRANSCODING |
ETSI GSM 06.20 : 4.2.1 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM; HALF RATE SPEECH TRANSCODING |
ETSI GSM 03.05 : 4.0.1 | TECHNICAL PERFORMANCE OBJECTIVES |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.