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Table 7 Packet-loss robustness factors derived from Databases 1, 3, 4, and 5 (random packet losses). Conditions refers to the number of packet-loss conditions used to derive the parameters.

From: Instrumental Estimation of E-Model Parameters for Wideband Speech Codecs

Codec Bit-rate Databases Average value
  (kbit/s) (conditions) WB-PESQ TOSQA-2001 Mod. WB-PESQ Average Auditory test
G.722 64 3(5), 4(5) 2.8 8.5 3.1 4.8 1.6
G.722.1 32 3(5), 4(5), 5(4) 6.3 9.7 5.5 7.1 6.3
G.722.1 24 1(3), 3(5), 4(5) 8.4 13.2 8.0 9.9 6.2
G.722.2 6.6 4(5) 7.8 15.4 7.8 10.3 6.6
G.722.2 8.85 4(5), 5(4) 5.8 11.3 5.7 7.6 5.6
G.722.2 12.65 4(5), 5(4) 5.5 11.2 5.7 7.5 5.2
G.722.2 14.25 4(5) 8.1 14.0 7.9 10.0 7.5
G.722.2 15.85 3(5), 4(5) 7.9 11.2 7.3 8.8 7.8
G.722.2 18.25 4(5) 7.9 14.9 7.9 10.3 7.6
G.722.2 19.85 4(5) 7.9 15.8 8.0 10.6 8.1
G.722.2 23.05 4(5) 7.9 15.7 7.9 10.5 9.5
G.722.2 23.85 3(5), 4(5), 5(4) 5.6 10.0 5.6 7.1 5.2
G.729EV 32 5(4) 5.2 13.9 9.0 9.4 9.4
G.729EV 24 5(4) 5.6 16.0 8.4 10.0 10.0
  1. G.729EV refers to the prepublished version of the ITU-T Rec. G.729.1 [7] standard.