Summary

Amendment 1 presents a new Appendix III to Recommendation ITU-T P.863 which gives advice on how ITU-T P.863 can be used for the prediction of listening quality of acoustically recorded speech data in a narrowband context. Narrowband context means that the reference signal is narrowband. The prediction is using a narrowband scale and ITU-T P.863 predicts as a listener in a pure narrowband listening test.