摘要
在分析H.324系统中双向视音频编解码所需要的运算量和存储容量的基础上,选择两片高速DSP芯片TMS320VC5509,合理分配资源,对视频编解码中关键代码进行优化,设计和实现了双向视音频编解码的实时H.324系统。特别是在定点DSP上采用了整数变换代替浮点DCT,消除了浮点运算,减少了运算量,给出了实验结果。
The basic construction of H.324 is introduced first. Two DSP chips named TMS320VC5509 are selected to realize real time H.324 system by the analysis of calculating capacity and memory capacity needed in video and audio codec. In this design the resources in DSP are allocated reasonably, the key parts of video codec are optimized. In order to eliminate float operation in fixed point DSP,floatpoint DCT is replaced by integer transform. The experiment result is finally presented.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2002年第6期64-66,70,共4页
Journal of National University of Defense Technology
