Opus
AMR amafayela
I-Opus iyikhodekhi yomsindo evulekile, engenamali enikeza ukucindezelwa kwekhwalithi ephezulu kukho kokubili inkulumo nomsindo ovamile. Ilungele izinhlelo zokusebenza ezahlukahlukene, kufaka phakathi i-voice over IP (VoIP) nokusakaza.
I-AMR (I-Adaptive Multi-Rate) ifomethi yokuminyanisa yomsindo elungiselelwe ukubhalwa kwekhodi yenkulumo. Ivamise ukusetshenziswa kumakhalekhukhwini ukuqoshwa kwezwi nokudlalwa komsindo.