Implementation of ITU-T G.723.1 dual rate speech codec based on TMS320C6201 DSP
- Resource Type
- Conference
- Authors
- Yongfeng Huang; Yang Juan; Sifa Zhang; Jiangling Zhang
- Source
- WCC 2000 - ICSP 2000. 2000 5th International Conference on Signal Processing Proceedings. 16th World Computer Congress 2000 Signal processing - Beijing Signal Processing Proceedings, 2000. WCCC-ICSP 2000. 5th International Conference on. 2:679-682 vol.2 2000
- Subject
- Signal Processing and Analysis
Computing and Processing
Communication, Networking and Broadcast Technologies
Speech codecs
Digital signal processing
Internet telephony
Filters
Linear predictive coding
Decoding
Optimization methods
Speech processing
Delay effects
Speech coding
- Language
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.