基于RTP的实时语音监听回放系统的研究与实现

he real-time monitoring and playing audio system transmits the radio audio data collected by hardware device to data processing center on RTP/UDP protocol through IP network and the center server plays real-time data and saves them in Wave format. The audio data need to be compressed and decompressed in G.729A or GSM610 format in order to improve band utilization and storage efficient. This paper introduces and analyzes the critical technology about audio monitoring and playing: real-time transmission technology and audio compression technology in streaming media. attempting to supply a detailed system architecture and design of real-time monitoring and playing audio system, including collecting and playing audio module, compression codec module, RTCP transmission control module and reading/writing wave file module. The whole system is implemented on VC++6.0 platform and passed the system test. At last, this paper introduces the optimization of auto-adapting synchronize transmitting scheme and implements the audio compression algorithm.