Real-time implementation of 4.8/3.6/2.4/1.2 kb/s high quality multi-rate speech coding on TMS320C31

Author

Xiongwei, Zhang ; Lixin, Cheng ; Chen Xiazhi

Author_Institution

Nanjing Inst. of Commun. Eng., China

fYear

1996

fDate

5-7 May 1996

Firstpage

449

Abstract

This paper presents a modified multiband excitation (M²BE) speech coding algorithm which can achieve high-quality synthesized speech at 4.8, 3.6, 2.4 and 1.2 kb/s. The computer simulation results show that the synthesized speech is quite natural even at rate as low as 2.4 kb/s. This algorithm has been successfully implemented on a single TMS320C31 floating point processor and informal listening test demonstrates that the speech quality is quite good between 1.2-4.8 kb/s

Keywords

digital signal processing chips; floating point arithmetic; speech coding; speech intelligibility; speech synthesis; 1.2 kbit/s; 2.4 kbit/s; 3.6 kbit/s; 4.8 kbit/s; DSP chip; TMS320C31 floating point processor; computer simulation results; high quality synthesized speech; informal listening test; modified multiband excitation; multirate speech coding; real time implementation; speech coding algorithm; speech quality; Bit rate; Computational complexity; Computer simulation; Digital signal processing chips; Oral communication; Smoothing methods; Speech coding; Speech processing; Speech synthesis; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Technology Proceedings, 1996. ICCT'96., 1996 International Conference on

Conference_Location

Beijing

Print_ISBN

0-7803-2916-3

Type

conf

DOI

10.1109/ICCT.1996.545219

Filename

545219