AVPC-subband coding system for speech encoding
E. Masgrau-Gomez, José B. Mariño, J.A. Rodriguez-Fonollosa, J. Salavedra-Moli · 1987
i z a t io n ( VQ ) an d p red i c t i v e t e c h n i q u e s -n a me d A V P C s y s t e m s -ha s b e e n s h o w n a s in t e r e sting systems for speech waveform coding at medium-high rates ( ref. 1 to 3).In this work we present a such system including a previous four subbbands splitting.This allows good quality of speech at low-medium rates (1-1.25 bits/sample).A comparative study show that the AVPC-SBC outperforms the simple AVPC coder.