Title :
Real time implementation of low bit rate speech encoder MELP on TMS320C54x DSP
Author :
Lin, Xiao ; Lim, ChoonBoon ; Hoh, SooPeng ; Li, Gang ; Huang, Haibin
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore
Abstract :
This paper presents the issues associated with the real-time implementation of MELP 2.4 kbps speech codec by using a TI fixed-point DSP. It briefly reviews the MELP algorithm and the procedure used in porting the fixed-point MELP C codes into the TMS320C54x assembly codes. Various factors such as memory, speed and compatibility are also discussed
Keywords :
digital signal processing chips; fixed point arithmetic; linear predictive coding; speech codecs; vocoders; 2.4 kbit/s; MELP algorithm; TMS320C54x DSP; TMS320C54x assembly codes; fixed-point DSP; fixed-point MELP C codes; low bit rate speech encoder; mixed excitation linear prediction; real-time implementation; speech codec; Assembly; Bit rate; Digital signal processing; Linear predictive coding; Nonlinear filters; Performance analysis; Signal analysis; Signal processing algorithms; Speech analysis; Speech codecs;
Conference_Titel :
Signal Processing Proceedings, 2000. WCCC-ICSP 2000. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-5747-7
DOI :
10.1109/ICOSP.2000.891596
