Summary

Recommendation ITU-T P.1311 describes a method for conducting a listening test that measures the intelligibility of multiple concurrent talkers in a teleconference. This Recommendation specifies how to conduct such a test, giving detail on stimulus design, creation of source material, selection of test conditions, calibration, selection and training of listeners, test administration, and reporting of results. This Recommendation includes an electronic attachment containing American English source material referenced in Appendix I.