Enhanced quality modified multiband excitation model at 2400 bps

Author

Jamrozik, M. ; Gowdy, John

Author_Institution

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

fYear

1996

fDate

11-14 Apr 1996

Firstpage

223

Lastpage

226

Abstract

This paper introduces the modified multiband excitation model (MMBE) for speech coding. The MMBE is a modified version of the multiband excitation model which operates at lower bit rates and has improved speech quality. The MMBE is similar to the improved multiband excitation coder described in Hardwick and Lim (1991). The MMBE bit rate is reduced by employing more efficient coding techniques and reducing the number of voiced/unvoiced decisions per frame of speech than the original MBE. The complexity of the MMBE has been kept to a minimum in order to be suitable for real time applications with DSP chips. Preliminary results show the MMBE to meet or exceed the duality of previous MBE models at bit rates of 4.8 kbps and below

Keywords

computational complexity; speech coding; 2400 bit/s; DSP chips; MMBE; bit rate; coding techniques; complexity; enhanced quality modified multiband excitation model; improved multiband excitation coder; modified multiband excitation model; multiband excitation model; real time applications; speech coding; speech quality; unvoiced decisions; voiced decisions; Delay; Error correction; Frequency estimation; Noise reduction; Parameter estimation; Phase estimation; Signal synthesis; Speech analysis; Speech enhancement; Speech synthesis;

fLanguage

English

Publisher

ieee

Conference_Titel

Southeastcon '96. Bringing Together Education, Science and Technology., Proceedings of the IEEE

Conference_Location

Tampa, FL

Print_ISBN

0-7803-3088-9

Type

conf

DOI

10.1109/SECON.1996.510061

Filename

510061