Title :
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
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;
Conference_Titel :
Southeastcon '96. Bringing Together Education, Science and Technology., Proceedings of the IEEE
Conference_Location :
Tampa, FL
Print_ISBN :
0-7803-3088-9
DOI :
10.1109/SECON.1996.510061
