Summary

Recommendation ITU-T G.107.1 gives the algorithm for the wideband (WB) version of the E-model as the common ITU‑T transmission rating model for planning speech services that provide WB speech transmission (50-7000 Hz). This computational model can be useful to transmission planners, to help ensure that users will be satisfied with end-to-end transmission performance. The primary output of the model is a scalar rating of transmission quality. A major feature of this model is the use of transmission impairment factors that reflect the effects of different types of degradations occurring on the entire transmission path, mouth-to-ear.

Corrigendum 1 corrects Equation (7-6).