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ITU-T SG12

Performance and quality of service

Study Period 2005

Results:13 total items.
Contributions  [ AI/Question: Q8/12 ]   Documents / Contributions
 
Number 
Title Source AI/Question
Date
[ 183 ]  
 
Wideband Equipment Impairment Factors for the G.711.1 Codec     Deutsche Telekom AG   Q8/12   2008-05-12
[ 182 ]  
 
Provisional Equipment Impairment Factors Ie for the Narrow-band Adaptative Multi-Rate (AMR) Speech Codec     Federal Republic of Germany   Q8/12   2008-05-12
[ 181 ]  
 
Extension of the methodology for the derivation of equipment impairment factors from subjective listening-only tests towards wideband speech codecs     Federal Republic of Germany; France Télécom R&D   Q8/12   2008-05-12
[ 178 ]  
 
Towards a New E-Model Impairment Factor for Linear Distortion of Narrowband and Wideband Speech Transmission     Republic Federal of Germany   Q8/12   2008-05-12
[ 115 ]  
 
Derivation of Wideband Equipment Impairment Factors from Listening-only tests and Instrumental Models     Japan   Q8/12   2007-09-24
[ 104 ]  
 
Derivation of Wideband Equipment Impairment Factors from Listening-only tests and Instrumental Models     Federal Republic of Germany , Japan , NTT , France Télécom   Q8/12   2007-09-21
[ 101 ]  
+Add.1 
Tests on overall quality as perceived by high frequency hearing impaired subscribers     Federal Republic of Germany   Q8/12   2007-09-21
[ 100 ]  
 
E-model P.564 Compliance Testing and E-model evolution proposals     France Télécom R&D   Q14/12, Q8/12   2007-09-21
[ 70 ]  
 
P.564 E-model Compliance Testing     Telchemy Inc., USA   Q8/12, Q14/12   2007-01-11
[ 61 ]  
 
Ie,wb and Bpl from signal-based models     France Telecom R&D , Deutsche Telekom AG   Q8/12   2007-01-08
[ 32 ]  
 
Draft Appendix I to ITU-T Recommendation G.109 "The E-model based quality contours for predicting speech transmission quality and user satisfaction from time varying transmission impairments"     Avaya GmbH, Germany   Q8/12   2007-01-08
[ 30 ]  
 
Comparison of E-Model and subjective test data for pure-delay conditions     BT   Q20/12, Q8/12, Q7/12   2007-01-08
[ 5 ]  
 
Proposed Corrigendum to Rec. P.834     Federal Republic of Germany   Q8/12   2004-11-29
Results:13 total items.
 
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