Summary

Amendment 3 to Recommendation ITU-T P.501 (2012) introduces Annex D and updates the References clause to accommodate new entries cited. It includes a set of test speech signals based on Annex B, which are composed of 6 s female-male combinations. The signals are especially prepared for use in conjunction with ITU-T P.800-based applications and perceptual based objective models using ITU-T P.800-conformant speech samples.