WAV
AMR amafayela
I-WAV (Ifomethi yefayela lomsindo we-Waveform) ifomethi yomsindo engacindezelwanga eyaziwa ngekhwalithi yayo ephezulu yomsindo. Ivamise ukusetshenziselwa izinhlelo zokusebenza zomsindo ochwepheshe.
I-AMR (I-Adaptive Multi-Rate) ifomethi yokuminyanisa yomsindo elungiselelwe ukubhalwa kwekhodi yenkulumo. Ivamise ukusetshenziswa kumakhalekhukhwini ukuqoshwa kwezwi nokudlalwa komsindo.