ITU-T - International Telecommunication Union/ITU Telcommunication Sector
Latest
ITU-T P.700-2019
Scope
The loudness model described in this Recommendation applies for all telephony audio bandwidths from narrow-band@ wideband@ super-wideband to fullband and for all types of terminals@ including handset@ headset@ hands-free and conference terminals. It is foreseen that the current ITU-T Loudness Rating Model@ as described in [ITU-T P.79] will be used in parallel with the loudness model given in this Recommendation for an extended period of time@ since it is anticipated that network planning will continue to have a preference towards Loudness Rating calculation according to P.79.