Modified multiband excitation model at 2400 bps

Author

Jamrozik, Michele ; Gowdy, John

Author_Institution

Dept. of Electr. & Comput. Eng., Clemson Univ., SC, USA

Volume

2

fYear

1997

fDate

21-24 Apr 1997

Firstpage

1603

Abstract

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

Keywords

linear predictive coding; parameter estimation; spectral analysis; speech coding; speech processing; vocoders; 2.4 kbit/s; FS-1016 CELP coder; MELP coder; high-pitched female speakers; listening speech quality; modified multiband excitation model; modified voiced/unvoiced decision algorithm; robust pitch estimate; speech coding; speech quality; Bit rate; Code standards; Degradation; Nonlinear filters; Robustness; Signal synthesis; Speech analysis; Speech coding; Speech synthesis; Vocoders;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on

Conference_Location

Munich

ISSN

1520-6149

Print_ISBN

0-8186-7919-0

Type

conf

DOI

10.1109/ICASSP.1997.596260

Filename

596260