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Table 6 Significant main effects of wireless-VoIP degradation sources on PESQ, P.563, and E-model performance. A check mark () indicates significant deviations from subjective test data; "NI" stands for "not included" in the datasets.

From: Performance Study of Objective Speech Quality Measurement for Modern Wireless-VoIP Communications

Impairment Noise-corrupted Noise-suppressed
  PESQ P.563 E-model PESQ P.563 E-model
Packet loss rate NI NI NI
Noise type
Noise level