Title :
Implementation of ITU-T G.723.1 dual rate speech codec based on TMS320C6201 DSP
Author :
Huang, Yongfeng ; Juan, Yang ; Zhang, Jiangling ; Jiangling Zhang
Author_Institution :
Sch. of Comput., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
This paper describes how to implement the G.723.1 recommendation in the IP telephony gateway and studies in detail the programming of the TMS320C6201 DSP and optimization methods for reducing the speech processing delay of the G.723.1 codec. As a result of adopting these optimization and programming methods, we have implemented a high-speed speech codec which can process concurrently 18 voice channels with a single TMS320C6201 chip in the IP telephony gateway. Finally, the paper summarizes the performance of the resulting ITU-T G.723.1 speech codec
Keywords :
Internet telephony; digital signal processing chips; speech codecs; IP telephony gateway; ITU-T G.723.1 speech codec; TMS320C6201 DSP; dual rate speech codec; optimization methods; speech processing delay; voice channels; Decoding; Delay effects; Digital signal processing; Filters; Internet telephony; Linear predictive coding; Optimization methods; Speech codecs; Speech coding; Speech processing;
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.2000.891602
