Title :
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
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;
Conference_Titel :
Communication Technology Proceedings, 1996. ICCT'96., 1996 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-2916-3
DOI :
10.1109/ICCT.1996.545219
