SSH ETS 300 967:1997 ed.1

Digital cellular telecommunications system; Half rate speech; ANSI-C code for the GSM half rate speech codec ANSI-C code for the GSM half rate speech codec (GSM 06.06 version 5.0.1)

Scope

This European Telecommunication Standard (ETS) contains an electronic copy of the ANSI-C code for the GSM half rate codec. The ANSI-C code is necessary for a bit exact implementation of the half rate speech (GSM 06.20 (ETS 300 969) [2]), Voice Activity Detector (GSM 06.42 (ETS 300 973) [6]), comfort noise (GSM 06.22 (ETS 300 971) [4]), Discontinuous Transmission (GSM 06.41 (ETS 300 972) [5]) and example solutions for substituting and muting of lost frames (GSM 06.21 (ETS 300 970) [3])