ETR 305 : 20001
Current
The latest, up-to-date edition.
DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM - PERFORMANCE CHARACTERIZATION OF THE GSM ENHANCED FULL RATE (EFR) SPEECH CODEC
Hardcopy , PDF
English
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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)
History
Provides background information on the performance of the GSM enhanced full rate speech codec.
| Committee |
SMG 2
|
| DocumentType |
Standard
|
| Pages |
29
|
| PublisherName |
European Telecommunications Standards Institute
|
| Status |
Current
|
| ETS 300 581-2 : 20002 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2); HALF RATE SPEECH; PART 2: HALF RATE SPEECH TRANSCODING |
| ETS 300 540 : 20006 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2); TRANSMISSION PLANNING ASPECTS OF THE SPEECH SERVICE IN THE GSM PUBLIC LAND MOBILE NETWORK (PLMN) SYSTEM |
| ETR 229 : 20001 | EUROPEAN DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM; HALF RATE SPEECH; PERFORMANCE CHARACTERIZATION OF THE GSM HALF RATE SPEECH CODEC |
| ETS 300 580-2 : 20003 | DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2) - FULL RATE SPEECH - PART 2: TRANSCODING |
| ETR 120002 : 20002 | EUROPEAN DIGITAL CELLULAR TELECOMMUNICATIONS SYSTEM (PHASE 2); TECHNICAL PERFORMANCE OBJECTIVES |
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