ETR 305 : 20001

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.