libgsm: LibGSM (GSM 06.10 Libraries) libgsm: libgsm: Contains user binaries for libgsm, an implementation of the European libgsm: GSM 06.10 provisional standard for full-rate speech transcoding libgsm: prI-ETS 300 036, which uses RPE/LTP (residual pulse excitation/long libgsm: term prediction) coding at 13 kbit/s. libgsm: libgsm: libgsm: libgsm: libgsm: