Implementation of VoIP System on SoC Platform

• Main Authors: Wei-Jei Wang, 王韋傑
• Other Authors: Jar-Ferr Yang
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/49121047591390709706

碩士 === 國立成功大學 === 電腦與通信工程研究所 === 93 === 　In this thesis, the implementation of G.729 Codec at DSP side on SoC platform is our mainly search, and we also combine the operating system at ARM side and network to complete VoIP System. At first, the G.729 Codec takes lots of calculation, so the sources codes of G.729 Codec have to be optimized and rewritten as assembly code. Then, the fast algorithm accelerate the fixed-codebook search, let the G.729 Codec achieve real-time encoding and decoding at DSP side. Finally, we combine the operating system and the application program at ARM side to complete the VoIP System which has the function of communication and leaving messages.