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TR 46.055 (SA4)
Performance characterization of the
GSM Enhanced Full Rate (EFR) speech codec

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V14.0.0 (PDF)    2017/03    28 p.
V13.0.0    2015/12    28 p.
V12.0.0    2014/09    28 p.
V11.0.0    2012/09    27 p.
V10.0.0    2011/04    27 p.
V9.0.0    2009/12    27 p.
V8.0.0    2008/12    27 p.
V7.0.0    2007/06    27 p.
V6.0.0    2005/01    27 p.
V5.0.0    2002/06    27 p.
V4.0.0    2001/04    27 p.


Rapporteur:  Mr. Usai, Paolino
Antecedent:  TR 06.55    

This TR gives background 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) are reported to give a more detailed picture of the behaviour of the GSM enhanced full rate speech codec under different conditions of operation.


 

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1   Scope   PDF-p. 7
2   References
3   Abbreviations
4   Quality under error (EP0 - EP3) and tandeming conditions (Exp Number 1 and Exp Number 5)   PDF-p. 8
5   Quality under background noise conditions (Exp Number 2 and Exp Number 3)   PDF-p. 9
6   Talker dependency (Exp Number 4)
7   DTX system
8   Performance with DTMF tones
9   Network information tones   PDF-p. 12
10   Performance with special input signals
11   Performance with different languages
12   Delay   PDF-p. 14
13   Frequency response   PDF-p. 17
14   Complexity   PDF-p. 18
15   Summary of the results from the subjective testing   PDF-p. 19
A   Summary of results (lab by lab)   PDF-p. 21
B   Change history   PDF-p. 25

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