Title :
An implementation of a high quality vocoder on TMS320VC33
Author :
Wu, Ping ; Zhao, Ming ; Cui, Huijuan
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
An implementation of a vocoder at very low bit rate with high quality on TMS320VC33DSP is presented in this paper. Through the technique of partial fixing-point, assembly instructions and mathematical optimization, the memory cost is reduced to fit the target on chip memory capacity and the operation complexity takes only 1/4 of the whole operation ability, meeting the requirement of real-time.
Keywords :
codecs; digital signal processing chips; real-time systems; vocoders; DSP implementation; TMS320VC33DSP; assembly instructions; bit rate; chip memory capacity; floating-point; high quality vocoder implementation; mathematical optimization; memory cost; operation ability; operation complexity; partial fixing-point; real-time requirement; Band pass filters; Bit rate; Decoding; Digital communication; Digital signal processing chips; Quantization; Signal synthesis; Speech coding; Speech synthesis; Vocoders;
Conference_Titel :
Communication Technology Proceedings, 2003. ICCT 2003. International Conference on
Print_ISBN :
7-5635-0686-1
DOI :
10.1109/ICCT.2003.1209892
