Amendment 1 to ITU-T Recommendation T.66 was prepared by ITU-T Study Group 8 (1997-2000) and was approved under the WTSC Resolution No. 1 procedure on 10 February 2000.
ITU-T G.115-1996 history
1996ITU-T G.115-1996 MEAN ACTIVE SPEECH LEVEL FOR ANNOUNCEMENTS AND SPEECH SYNTHESIS SYSTEMS Study Group 12