Table 1 Processing conditions included in the seven databases. PL refers to packet-loss conditions, BP to bandpass filtering and TD to tandeming of speech codecs.
From: Instrumental Estimation of E-Model Parameters for Wideband Speech Codecs
Database | Context | Conditions | |
|---|---|---|---|
1 | NB | Clean, G.726, G.729, TD, PL at | |
NB/WB | Clean, G.722, G.722.1, G.722.2, G.711, G.726, G.729, PL at | ||
2 | NB | Clean, BP, G.726, G.729A | |
NB/WB | Clean, BP, G.722.2, G.711, G.726 | ||
3 | NB/WB | Clean, G.722, G.722.1, G.722.2, G.711, G.726, G.729, GSM-EFR, PL at | |
4 | NB/WB | Clean, BP, MNRU, G.722, G.722.1, G.722.2, G.711, G.726, G.729, TD, VoIP, PL at | |
5 | NB | Clean, G.711, G.729A, G.723.1, AMR, TD, PL at | |
NB/WB | Clean, G.722, G.722.2, G.729EV | ||
6 | 1 | NB | MNRU, G.711, G.726, G.729, GSM-FR, TD |
3 | NB | Clean, MNRU, G.726, G.729, BGN, PL at | |
7 | NB/WB | Clean, BP, MNRU, G.722.2, G.729A, 5 candidate codecs for G.729.1 | |
%
%
%
%
%
, G.711, AMR, TD, PL 
%
%
G.729EV refers to the prepublished version of the ITU-T Rec. G.729.1 [7] standard.
G.729EV refers to the prepublished version of the ITU-T Rec. G.729.1 [