Modified multiband excitation model at 2400 bps
M. Jamrozik, J.N. Gowdy · 2002
This paper presents the modified multiband excitation model used for speech coding. In many MBE model coders, speech quality is degraded when incorrect voicing decisions are made, particularly for high-pitched female speakers. The MMBE addresses this issue with a modified voiced/unvoiced decision algorithm and a more robust pitch estimate. The listening quality of speech produced using the MMBE model is superior to the FS-1016 CELP coder and is at least comparable with the new 2400 bps MELP coder chosen as the new 2400 bps Federal Standard.